Pls help. I need answers for my Evolution crossword puzzle. What are the words to the definitions?
Answers
Evolution scientific theory explaining how new species and varieties originate. The process by which new species or populations of living organisms develop from preexisting ones over repeated generations.
3 terms that best describe evolution?Three words—change over time—are all it takes to sum up evolution. The diversity we witness now is the product of the lengthy history of change that life has undergone.
What are the five evolutionary lines?There are visible results of evolution. The fossil record, biogeography, comparative anatomy, comparative embryology, and molecular biology are the five sources of evidence that support evolution. Evolution is the process by which a population of organisms changes as new generations replace ancestors.
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Related Questions
In humans, normal vision is completely dominant (N) and myopia (nearsightedness) is recessive (n). A homozygous normal female marries a myopic male. What would be the genotypes and phenotypes of the offspring?
Answers
The phenotypes of the offspring would depend on whether they inherit a dominant or recessive allele from each parent.
If they inherit a dominant N allele from the mother and a recessive n allele from the father, they would be heterozygous normal (Nn) and have normal vision.
If they inherit a recessive n allele from both parents, they would be homozygous recessive (nn) and have myopia.
Therefore, the offspring would have a 50% chance of having normal vision and a 50% chance of having myopia.
The dietary practices of the Inuit in the Arctic regions prove the point that diets rich in fat are not automatically unhealthy. Which of the following statements provides one possible explanation? Unsaturated fats containing Omega 3s reportedly have a positive effect on cardiovascular health.
Answers
One possible explanation for why the dietary practices of the Inuit in the Arctic regions prove the point that diets rich in fat are not automatically unhealthy is because the fats that they consume are primarily unsaturated fats containing Omega 3s, which have been shown to have a positive effect on cardiovascular health.
Unsaturated fats are a type of fat that is considered to be healthier than saturated fats, which are typically found in animal products and are associated with an increased risk of heart disease.
Omega 3s, a type of unsaturated fat, have been shown to have a number of health benefits, including reducing inflammation, lowering blood pressure, and reducing the risk of heart disease.
Therefore, the Inuit's diet, which is rich in unsaturated fats and Omega 3s, may be healthier than a diet that is rich in saturated fats, even though both diets are high in fat. This is one possible explanation for why the Inuit's dietary practices prove the point that diets rich in fat are not automatically unhealthy.
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Explain the stages of complete and incomplete metamorphosis, provide examples for each.
Answers
Answer:
In conclusion, both complete and incomplete metamorphosis involve distinct stages that insects go through during their life cycle. Complete metamorphosis involves four stages (egg, larva, pupa, and adult) while incomplete metamorphosis involves three stages (egg, nymph, and adult). By understanding these stages of metamorphosis in insects we can better understand their development and behavior throughout their life cycle.
Explanation:
Metamorphosis is the process of transformation that many animals go through during their life cycle. There are two main types of metamorphosis: complete and incomplete. Complete metamorphosis involves four distinct stages, while incomplete metamorphosis involves three stages. In this answer, I will explain each stage in detail and provide examples for both types of metamorphosis.
Complete Metamorphosis:
Complete metamorphosis is a type of metamorphosis that involves four distinct stages: egg, larva, pupa, and adult. The following are the stages of complete metamorphosis:
1. Egg Stage: The first stage of complete metamorphosis is the egg stage. This is when the female lays her eggs, which can be deposited in various places depending on the species. For example, butterflies lay their eggs on leaves, while beetles lay their eggs in soil.
2. Larva Stage: After hatching from the egg, the insect enters the larva stage. During this stage, the insect undergoes rapid growth and molts several times to shed its skin. The larva looks completely different from the adult and has a worm-like appearance. Examples of insects that undergo complete metamorphosis include butterflies, moths, beetles, and flies.
3. Pupa Stage: The third stage of complete metamorphosis is the pupa stage. During this stage, the larva transforms into an adult by undergoing a process called metamorphosis. The pupa is usually enclosed in a cocoon or chrysalis and does not move around much. Inside the pupa, the insect's body undergoes dramatic changes as it develops into an adult.
4. Adult Stage: The final stage of complete metamorphosis is the adult stage. After emerging from the pupa, the insect is now fully developed and ready to reproduce. The adult looks completely different from the larva and has wings for flying. Examples of insects that undergo complete metamorphosis include butterflies, moths, beetles, and flies.
Incomplete Metamorphosis:
Incomplete metamorphosis is a type of metamorphosis that involves three stages: egg, nymph, and adult. Unlike complete metamorphosis, insects that undergo incomplete metamorphosis do not have a pupal stage where they transform into an adult. Instead, they gradually develop into adults over time.
1. Egg Stage: As with complete metamorphosis, the first stage of incomplete metamorphosis is the egg stage.
2. Nymph Stage: After hatching from the egg, the insect enters the nymph stage. During this stage, the insect looks similar to the adult but lacks wings and reproductive organs. The nymph molts several times as it grows larger until it reaches its final size.
3. Adult Stage: The final stage of incomplete metamorphosis is the adult stage. After molting for the last time, the insect develops wings and reproductive organs and is now capable of reproducing. Examples of insects that undergo incomplete metamorphosis include grasshoppers, crickets, and cockroaches.
Macrophages sometimes produce a chemical called tnf (tumor necrosis factor) in order to alert other cells of the immune system. Tnf would be an example of a(n)
Answers
Macrophages sometimes produce a chemical called TNF. Tumor necrosis factor (TNF) produced by macrophages is an example of a cytokine.
Cytokines are a broad and diverse class of signaling molecules produced by various cells of the immune system, including macrophages. They are small proteins or glycoproteins that act as messengers between cells, transmitting signals that regulate immune responses and other physiological processes.
TNF is a type of cytokine that is involved in various immune system functions, including the regulation of inflammation and the defense against viral and bacterial infections. When macrophages detect an infection or other threat to the body, they can release TNF to alert other immune cells to the presence of the pathogen.
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1. _______ are thought to have been present before vertebrates.
2. Cladograms are graphic representations of evolutionary history, which is called _______. They are sometimes referred to as phylogenetic trees.
3. Each node, or intersection, on a cladogram represents a/n _______ between two species.
4. Traits, or characteristics, that organisms develop and are passed down to become new species are called _______ traits.
5. Traits or structures that likely developed from common ancestors are called _______ structures.
6. Traits or structures that have a similar function, or job, but are not shared due to common ancestry are called _______ structures.
7. Primates are a group of animals that have developed many adaptations such as larger brains, binocular vision and _______ thumbs that support arboreal life.
8. New World monkeys differ from Old World monkeys because they have _______ which act as additional hands when living in the trees.
9. _______ is an early australopithecine skeleton, found in 1974.
10. Homo _______ is not thought to have evolved into Homo sapiens. The two are now thought to have been present at the same time as sister species.
11. Describe how scientists use comparative anatomy when building cladograms.
Answers
Answer:
Invertebrates are thought to have been present before vertebrates.
Cladograms are graphic representations of evolutionary history, which is called phylogeny. They are sometimes referred to as phylogenetic trees.
Each node, or intersection, on a cladogram represents a common ancestor between two species.
Traits, or characteristics, that organisms develop and are passed down to become new species are called acquired traits.
Traits or structures that likely developed from common ancestors are called homologous structures.
Traits or structures that have a similar function, or job, but are not shared due to common ancestry are called analogous structures.
Primates are a group of animals that have developed many adaptations such as larger brains, binocular vision and opposable thumbs that support arboreal life.
New World monkeys differ from Old World monkeys because they have prehensile tails which act as additional hands when living in the trees.
Lucy is an early australopithecine skeleton, found in 1974.
Homo neanderthalensis is not thought to have evolved into Homo sapiens. The two are now thought to have been present at the same time as sister species.
Scientists use comparative anatomy to identify homologous structures, or traits that are shared due to a common ancestor, among different species. By comparing these structures across many different species, scientists can build cladograms that show the evolutionary relationships between them.
In genetics, what does a genotype of Hh signify?
Choose 1 answer:
(Choice A) Homozygous; two dominant alleles
A
Homozygous; two dominant alleles
(Choice B) Homozygous; two recessive alleles
B
Homozygous; two recessive alleles
(Choice C) Heterozygous; one dominant allele and one recessive allele
C
Heterozygous; one dominant allele and one recessive allele
(Choice D) Homozygous; one dominant allele and one recessive allele
D
Homozygous; one dominant allele and one recessive allele
Answers
Hannah rescued an injured dog when she was on a road trip. Which veterinarian can help her in this situation?
A. a veterinarian who is into education
B. a veterinarian who works at an aquarium
C. a veterinarian who works in the food industry
D. a veterinarian who cares for laboratory animals
E. a veterinarian who specializes in shelter medicine
Answers
The veterinarian that can help Hannah in this situation is a veterinarian who specializes in shelter medicine.
The correct option is E.
Which veterinarian will help Hannah?Shelter veterinarians are trained to provide medical care for animals that have been rescued from the streets or are in a shelter.
They are experienced in handling and treating animals that have been injured or are in critical condition. They can diagnose the dog's injuries and provide appropriate treatment to help the dog recover.
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Discuss the direction of movement of the protozoans in pond water in relation to the movement of the slide.
Answers
Protozoans are unicellular eukaryotes that are classified as protists. Protozoans are found in a variety of habitats, including soil, water, and other microorganisms. There are several types of protozoans, each of which has a unique method of moving. The direction of movement of the protozoans in pond water is in relation to the movement of the slide.
When viewed under a microscope, protozoans in pond water appear to be stationary. However, when the slide is moved in a specific direction, the protozoans move in the opposite direction. This is due to the fact that protozoans use their flagella or cilia to propel themselves in a specific direction.
When viewed under a microscope, the direction of movement of protozoans in pond water can be observed in relation to the movement of the slide. Protozoans move in the opposite direction of the slide due to the flagella or cilia they use to propel themselves in a specific direction.
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Cape Town, South Africa gets most of the city's water from rain. Recent years of prolonged drought reduced the water supply for the city. If residents do not respond to the shortage, the city will most likely need to provide only a small amount of water per person per day.
What ,begin emphasis,two,end emphasis, actions will ,begin emphasis,best,end emphasis, help people in Cape Town lessen the water shortage problem?
Answers
By implementing a combination of conservation measures and diversification of water sources, the city can work towards a more sustainable future for its residents.
What is sustainable resource?A sustainable resource is a resource that is replenished naturally and can be used without depleting it over time. It is a resource that can be utilized without compromising its availability for future generations. Examples of sustainable resources include solar energy, wind energy, geothermal energy, tidal energy, and biomass. These resources can be continuously replenished by natural processes and their use does not lead to their depletion or degradation over time. In contrast, non-sustainable resources are those that are finite and cannot be replenished over time. Examples of non-sustainable resources include fossil fuels, minerals, and other natural resources that are extracted from the earth at a faster rate than they can be replenished. The use of non-sustainable resources can lead to their depletion and contribute to environmental degradation, making it important to transition towards sustainable resources for a more sustainable future.
Here,
There are several actions that could help people in Cape Town lessen the water shortage problem, but two of the best options are:
Water Conservation: One of the most effective ways to reduce water usage in Cape Town is to promote water conservation practices among residents. This can include simple actions like fixing leaks, using low-flow showerheads and faucets, reducing shower time, and collecting and reusing greywater for non-potable purposes. By conserving water, residents can help ensure that the city's limited water supply is used more efficiently.
Diversification of Water Sources: In addition to conservation efforts, Cape Town could also invest in diversifying its water sources to ensure a more reliable supply of water. This could include initiatives like harvesting and treating groundwater, desalinating seawater, and capturing and storing rainwater. By increasing the city's access to alternative sources of water, it can reduce its reliance on rainfall, which has become increasingly unpredictable in recent years.
Together, these two actions can help Cape Town residents reduce their water usage and ensure a more reliable supply of water for the city.
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Explain.(a) The modern environment theory
Answers
The Modern Theory is the integration of valuable concepts of the classical models with the social and behavioral sciences. This theory posits that an organization is a system that changes with the change in its environment, both internal and external.
What are two benefits of oyster farms
Answers
Answer:
Shellfish beds stabilize sediments, helping to protect the shoreline from erosion and storms. Oyster reefs can sequester carbon and protect surrounding habitats like salt marshes from erosion, aiding carbon sequestration in these habitats.
Explanation:
18. How does contact metamorphism relate to plate tectonics?
O A. Contact metamorphism causes earthquakes, which is the driving force behind plate motion.
OB.
Contact metamorphism occurs along the margins of magma bodies, which occur in great numbers at
subduction and rifting zones.
OC. Plate motions cause earthquakes, which are the driving force behind contact metamorphism
Contact metamorphism occurs along the margins of magma bodies, which occur primarily in
OD.
continent-continent collision zones.
Answers
The answer is B. Contact metamorphism occurs along the margins of magma bodies, which occur in great numbers at subduction and rifting zones, and subduction and rifting zones are directly related to plate tectonics.
Contact metamorphism occurs when rocks are altered by heat and/or pressure from nearby intrusions of magma. These intrusions often occur at subduction zones and divergent boundaries, which are part of the larger system of plate tectonics. Subduction zones occur where one tectonic plate is forced beneath another, and divergent boundaries occur where two plates are moving away from each other. The process of plate tectonics is responsible for the formation of these boundaries and the associated geological processes, such as contact metamorphism.
Therefore, contact metamorphism is directly related to plate tectonics.
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purple sulfur bacteria are purple sulfur bacteria are a phylogenetically heterogeneous group of microbes that reduce sulfate to sulfur. thermophilic bacteria that reduce elemental sulfur to sulfide. gammaproteobacteria that use hydrogen sulfide as an electron donor for photosynthesis. alphaproteobacteria that oxidize hydrogen sulfide in the presence of oxygen or nitrate.
Answers
Purple sulfur bacteria are gammaproteobacteria that use hydrogen sulfide as an electron donor for photosynthesis.
Purple sulfur bacteria are a phylogenetically heterogeneous group of microbes that are classified as gammaproteobacteria. These bacteria are known for their ability to use hydrogen sulfide as an electron donor for photosynthesis, which is a process that converts light energy into chemical energy.
In addition, purple sulfur bacteria are also known for their ability to reduce sulfate to sulfur, which is an important process in the sulfur cycle.
These bacteria are typically found in environments with high levels of hydrogen sulfide, such as hot springs and sulfur-rich mud.
While some purple sulfur bacteria are thermophilic, meaning they thrive in high temperatures, others are alphaproteobacteria that oxidize hydrogen sulfide in the presence of oxygen or nitrate. Overall, purple sulfur bacteria play an important role in the sulfur cycle and contribute to the diversity of microbial life on Earth.
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Describe the circulatory system of the squid. Is this open or closed and how does it work?
Answers
Due to the closed circulatory system that squids and humans share, all of their blood is kept in a system of blood vessels (arteries, veins, and capillaries).
The circulatory system of a squid is it open or closed?The heart pumps blood into arteries and veins, allowing it to circulate through the body inside the closed circulatory system, in all vertebrates and some invertebrates (such as octopuses and squids).
How does a squid's circulatory system function?Squids have three hearts, two of which are branchial and one of which is systemic. Blood is pumped by the branchial hearts to the gills, where oxygen is absorbed. The systemic heart is where the blood is subsequently circulated to the rest of the body.
A squid breathes in what ways?In addition to taking in oxygen via their gills, squid is assumed to get a significant amount of their oxygen through simple diffusion through their skin.
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A student drew a model showing the process of photosynthesis. In this activity, you will review that model and answer questions about it. Part A
Question
Drag each tile to the correct location. Label the model to show the process of photosynthesis. ADP Calvin cycle chloroplast CO2 granum H2O O2 radiant energy sugar
Answers
Photosynthesis is the process in which plants convert atmospheric CO2 and water into oxygen and glucose, synthesizing their own food with the help of chlorophyll, present in the chloroplast.
Solar energy is transformed into chemical energy, such the energy found in the glucose molecule, during the process of photosynthesis. In the process of photosynthesis, water is absorbed by the plant from the soil by its roots and carbon dioxide is taken inside the body of the plant through microscopic pores called stomata.
Water and carbon dioxide both serve as photosynthesis' reactants. Oxygen and glucose are created when they mix in the presence of radiant energy of the sunshine. This reaction can be represented as:
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
(Refer to the image attached for the representation of the model discussed in the question.)
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12. A new colony of bacteria become more resistant to antibiotics. This happens through natural selection because a few of the bacteria population have traits that make them stronger than the others. This is an example of:
Answers
A novel bacterial colony develops antibiotic resistance. Due to a handful of the bacteria population's features making them stronger than the others, this occurs naturally. One illustration of antibiotic resistance is this.
Antibiotic usage is the primary contributor to antibiotic resistance. While some bacteria die when humans take antibiotics, resistant bacteria can live and even proliferate. Antibiotic usage increases the prevalence of microorganisms with resistance. Bacteria have a greater probability of developing antibiotic resistance the more often we use antibiotics.
Bacteria can evolve antibiotic resistance through mutation and selection. For instance, although some bacteria have evolved to create enzymes to inactivate antibiotics, others have built biochemical "pumps" that may remove an antibiotic before it reaches its target.
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Observe the scatter graph I will show you and describe the relationship between dingo density and amount of riverine area
Answers
The number of dingos per 100 km² rises as riverine areas do. This is due to the fact that when the environment changes, more dingoes want to migrate.
What elements influence how organisms are distributed?The distribution of species depends on how biotic and abiotic environmental factors interact. The spatial distribution of plants and animals can be significantly influenced by biotic interactions within and between species as well as abiotic elements like temperature, precipitation, and soil nutrients.
What factors restrict the biosphere's size?Biologic restrictions on an organism's ability to use resources, such as food, mates, and competition with other living things, are some examples. Others are abiotic, such as the amount of sunshine that is present in an environment and factors like altitude, temperature, and space.
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Describe the relationship between dingo density and amount of riverine area.
Suppose a person is 80 years old and that puberty took place when he or she was 12 years old. a. Calculate the percentage of the person's life that he or she spent in each of the four stages of development that follow birth. b. Make a bar graph showing the percentage for each stage.
PLS HELP ITS DUE AT 11PM ITS ALMOST 11
Answers
80 years is the whole lifespan, multiplied by 100. Childhood and infancy: (12/80) x 100 = 15%. Teenagers: (8/80) times 100 is 10%. Adulthood: (56.25%) (45/80) times 100. Old age: (15/80) x 100 = 18.75%
What is the average human lifespan?This is known as the "maximum life span," which is the maximum length of time any human has ever been known to have lived. According to a theoretical analysis, there are restrictions on the maximum life expectancy at birth.
What is class 10 life span?The period from conception to natural death is considered a person's life span. An organism's life span is a hypothetical number that represents how many years it will survive. The average can be used to estimate it.
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What would be the most likely effect of adding more protons to the
mitochondrial matrix?
1. The phosphorylation of ADP to ATP will be reduced.
2. FADH2 will not be converted to FAD.
3. Glucose will not be converted to pyruvate.
4. A larger proton gradient between the matrix and intermembrane space will be
produced.
5. More protons will flow through 'ATP synthase into the matrix.
6. AMP will be oxidized, and ADP reduced, at a faster rate.
Answers
Adding more protons to the mitochondrial matrix would result in a larger proton gradient between the matrix and intermembrane space being produced. option 4 is correct.
This is because the matrix is the site of proton accumulation during the electron transport chain, which generates a proton gradient across the inner mitochondrial membrane. The greater the proton gradient, the more energy is available to drive ATP synthesis by the enzyme ATP synthase. Therefore, option 4, "A larger proton gradient between the matrix and intermembrane space will be produced," is the most likely effect of adding more protons to the mitochondrial matrix. None of the other options are directly related to the proton gradient or affected by changes in the matrix proton concentration.
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Need help with this
Answers
Therefore, the correct answer is A (cell equator), B, and G.
How these option are correct?
C is incorrect because sister chromatids do not line up at the equator during meiosis I, instead, homologous chromosomes do. D is incorrect because sister chromatids are not separated at the centromeres during meiosis I, but during meiosis II.E and F are incorrect because they do not describe meiosis I. H is incorrect because during meiosis I, each chromosome consists of two homologous chromosomes, not two sister chromatids.
What is chromatids in biology?A chromatid is one of the two identical halves of a chromosome that has been replicated in preparation for cell division. The two “sister” chromatids are joined at a constricted region of the chromosome called the centromere.
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A) Homologous chromosomes align at the equator of the cell.
D) Sister chromatids are separated at their centromeres.
G) The number of chromosomes is reduced from 2n to n.
B) Crossing over can occur during synapsis.
What happens during meiosis I?During meiosis I, homologous chromosomes pair up and line up at the cell equator during metaphase I. This is followed by the separation of homologous chromosomes during anaphase I, which results in the reduction of the chromosome number from 2n to n. During prophase I, crossing over can occur between non-sister chromatids of homologous chromosomes. Finally, during telophase I, two nuclei form around the separated chromosomes. Sister chromatids are pulled apart at the centromeres during meiosis II.
A) Sister chromatids line up at the cell equator.
E) Sister chromatids are pulled apart at the centromeres.
B) The chromosome number is reduced from 2n to n.
These statements characterize meiosis II. Meiosis II is the second phase of meiosis, which occurs after meiosis I. The purpose of meiosis II is to separate sister chromatids, which were produced during DNA replication in the S phase of interphase. In meiosis II, sister chromatids line up at the cell equator during metaphase II and are pulled apart at the centromeres during anaphase II, resulting in the reduction of the chromosome number from 2n to n. Finally, during telophase II, four nuclei form around the separated chromosomes. Homologous chromosomes do not pair up during meiosis II, and crossing over does not occur.
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80 POINTS!
Please help!
1)
Starting from the sun, create a food chain including at least three organisms. Explain how energy is transferred through the chain.
2)
Describe one path carbon can take through the environment (through the systems and bodies of living things and back in our land, oceans, and atmosphere). Be sure to include at least five specific places that the carbon atom can be found as it makes its cycle.
Answers
Answer: Sun → Grass → Rabbit → Fox
1. In this food chain, the sun provides energy to the grass through photosynthesis. The grass is then eaten by the rabbit, which in turn is eaten by the fox. As each organism eats the one below it in the chain, energy is transferred from one organism to the next.
2. Carbon is found in many places in the environment and cycles through various systems and bodies of living things. One path carbon can take is:
Carbon in the atmosphere is absorbed by plants through photosynthesis.
Carbon is stored in plants and transferred to animals that eat the plants.
Carbon is released into the atmosphere through respiration by plants and animals.
Dead organisms and waste products decompose and release carbon into the soil or water.
Carbon in the soil or water can be taken up by plants and the cycle repeats.
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q3.6. some students have the misconception that during cellular respiration, the matter in glucose is somehow turned into energy. consider that when we exercise, we burn glucose and also lose mass. why does this happen?
Answers
When we exercise, we lose the potential energy that is held in glucose by our cells, which decreases our mass. Despite the initial high energy consumption, both proteins and fats can provide energy.
What kind of breakdown occurs when glucose is converted into chemical energy that the cells use to function?A sequence of chemical processes known as cellular respiration convert glucose into ATP, which can then be used as energy for a variety of bodily functions. Glycolysis, the citric acid cycle, and oxidative phosphorylation are the three basic processes that take place during cellular respiration.
Uses energy during cellular respiration?The catch is that your cells' cellular respiration is a biological activity. Energy in the form of ATP is required for biochemical reactions.
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Earth's oceans act like giant solar panels. Although the lithosphere land
the atmosphere absorb some sunlight, the majority of the sun's radiation
is absorbed by the oceans. Ocean currents also help distribute heat
around the globe, thus influencing climatic patterns, moving ocean water
from the equator to the poles and back again. All BUT ONE choice
describes, in part, how the ocean influences climate on Earth.
Answers
The ocean has a climate-moderating effect by releasing carbon dioxide, which slows the warming of the atmosphere caused by rising amounts of greenhouse gases.
What exactly is an ocean current?Ocean currents are movements of seawater inside the ocean that travel in a specified direction. Winds, temperature, salinity, and the rotation of the Earth are all factors that influence them. There are two sorts of currents: surface currents and deep currents. Surface currents are influenced by wind and impact the upper layers of the ocean, whereas deep currents are influenced by density differences and affect the lower layers of the ocean. Ocean currents influence marine ecosystems and worldwide transit routes, as well as managing the Earth's climate and weather patterns.
As a result, the right answer is A.
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J. W. McKay crossed a stock melon plant that produced tan seeds with a plant that produced red seeds and obtained the following results (J. W. McKay. 1936. Journal of Heredity 27:110– 112)
Answers
The F1 generation contains all tan seed producing progeny and is the result of crossing a tan-seed-producing plant with a red-seed-producing plant.
The inheritance of tan seeds and red seeds in the plant crossed by J.W. McKay can be explained by the principles of Mendelian genetics. Mendel's laws of inheritance state that an individual receives two copies of each gene, one from each parent, and that these copies can be either dominant or recessive. In this case, the tan seed color is most likely the result of a recessive allele, while the red seed color is most likely the result of a dominant allele.
When McKay crossed the stock melon plant producing tan seeds with a plant producing red seeds, the resulting offspring (F1 generation) all produced red seeds. This suggests that the red seed color is dominant over the tan seed color. However, when the F1 plants were crossed with each other, the resulting offspring (F2 generation) showed a 3:1 ratio of red to tan seed colors, indicating that the tan seed color is recessive and present in a homozygous recessive form in the F2 plants. Therefore, the inheritance of tan seeds and red seeds in this plant can be explained by a simple Mendelian pattern of inheritance with one dominant and one recessive allele.
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The complete question is:
J. W. McKay crossed a stock melon plant that produced tan seeds with a plant that produced red seeds and obtained the following results (J. W. McKay. 1936. Journal of Heredity 27:110-112).
Cross
tan ♀ × red ♂
F1: 13 tan seedsF2: 93 tan, 24 red seedsExplain the inheritance of tan seeds and red seeds in this plant.
A) Prepare 100mL of a 20%v/v bleach solution. I) What is the total volume of solution wanted? ii) What is the volume of bleach (solute) needed? iii) What is the volume of water (solvertt) needed? Do your best to show your calculations. B) Prepare 100mL of a 3%m/v NaCl solution. I) What is the total volume of solution wanted? ii) What is the mass of NaCl (solute) needed? iii) What is the volume of water (solvent) needed? Tabatta hornstarur col
Answers
A bleach solution typically refers to a solution of sodium hypochlorite (NaClO) in water, which is commonly used as a disinfectant and cleaning agent.
A) i) Total volume of solution = 100 mL
ii) Volume of bleach (solute) needed = (20/100) x 100 mL = 20 mL
iii) Volume of water (solvent) needed = 100 mL - 20 mL = 80 mL
B) i) Total volume of solution wanted = 100 mL
ii) Mass of NaCl (solute) needed = (3/100) x 100 g = 3 g
iii) Volume of water (solvent) needed = 100 mL - 3 g (converted to volume using the density of NaCl and the formula V = m/d) = 97.45 mL
Calculations:
Density of NaCl = 2.16 g/mL
For part B, to convert the mass of NaCl to volume, we can use the formula:
V = m/d
where V is the volume in mL, m is the mass in g, and d is the density in g/mL.
So, V = 3 g / 2.16 g/mL = 1.39 mL
Therefore, the volume of water needed would be:
Volume of water = Total volume of solution - Volume of NaCl
Volume of water = 100 mL - 1.39 mL = 98.61 mL
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Describe how a streams rate of erosion and deposition are related to its gradient
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Answer:
Explanation:
High gradient stream has the highest erosion and least deposition
low gradient streams have most deposition and least erosion
Which of the primary effects of habitat fragmentation would most harm an animals ability to hunt for food?
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Animal mobility is hampered by fragmentation. As individuals have difficulty crossing habitat patches, inbreeding may increase and genetic diversity may be lost.
The ecological impacts of fragmentation, including habitat loss and reduced diversity of plant and animal species, are known to be detrimental primarily to all taxa. The ability of 4,444 species to adapt to changing environments is impaired by habitat fragmentation, which also threatens the size of species populations. This occurs at the genetic level in small populations due to interruption of gene flow from one generation to the next.
The Indian Elephant is the example of endangered species list due to habitat degradation.
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humans cut down a forest to build a mall. which population has adaptations that make it most likely to survive
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The organism that is most likely to survive the destruction of the forest caused by humans building a mall is the black rat.
The black rat has several adaptations that make it particularly well suited to survive in a variety of habitats and to thrive when humans are present. It is an excellent climber and can easily scale walls and other structures to find food, shelter, and nesting sites. It is also an omnivore, which means it can eat a wide variety of food sources, including human trash.
Furthermore, black rats are quite resilient and can tolerate a wide range of temperatures, making them more likely to survive in an urban environment.
Finally, they reproduce quickly, meaning that if the original population survives, it can quickly repopulate the area. All of these adaptations make the black rat the population most likely to survive the destruction of the forest caused by humans building a mall.
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Your endocrine system includes eight major glands throughout your body. These glands make all the hormones, or chemical messengers that travel through your bloodstream to your tissues and organs. Hormones regulate all sorts of body process, like growth and development, metabolism, reproduction, and mood. If your hormone levels are too high or too low, it will affect how your body will function. Your body also may not respond to hormones the way it's supposed to if you are under stress or are ill. There are many endocrine diseases and disorders, Diabetes being the most common and most well-known of these.
Research one of the endocrine disorders found on the website below, or any other that you find. Write a 800 word report on the disorder, including what its symptoms are, who it can affect most, and what other issues it can cause. Also include what medications or treatments are available, how they help control the disorder or relieve symptoms, and how effective they are. Make sure to cite your sources, and include statistics in a table or a graph based on information you found about your disorder.
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One endocrine disorder that affects millions of people worldwide is diabetes mellitus.
Explain one endocrine disorder
Diabetes is a chronic condition that occurs when the body is unable to produce or effectively use insulin, a hormone produced by the pancreas that regulates blood glucose levels.
There are two main types of diabetes: type 1 and type 2. Type 1 diabetes, also known as juvenile diabetes, typically develops in childhood or adolescence and is caused by the immune system mistakenly attacking and destroying the cells in the pancreas that produce insulin.
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Which abbreviation could be used to represent a heterozygous genotype?
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B) T_ abbreviation(s) could be used to represent a heterozygous genotype
An organism's genotype is made up of all of its genetic components. The term "genotype" can also be used to describe the alleles or genetic variations that a person possesses in a certain gene or genetic region.
The ploidy, or number of copies of each chromosome, found in that species, determines how many alleles a person can have for a given gene. In diploid organisms like humans, there are two complete sets of chromosomes, which means that each person has two alleles for each gene. Homozygous refers to a genotype when both alleles are the same. Heterozygous refers to a genotype when there are two distinct alleles.
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Full Question: Which abbreviation(s) could be used to represent a heterozygous genotype? O A) Tt B) T_ O C) TT O D) A or
B O E) Bor C