Answer:
Genetic variation will increase because of a new habitat and food source. What will most likely happen to the population of moths in this habitat? The moths will evolve due to a selective pressure. ... Population changes are driven by competition and sexual selection.
Explanation:
Come up with your own story of a trophic cascade, describing how the organisms occupying the different trophic levels would be affected
Answer:
The leafhoppers eat plant tissues and, at the same time, they are eaten by spiders that are the food of large lizards. Finally, these lizards are the food of birds that are eaten by snakes.
Explanation:
The food chain starts with primary producers such as plants and algae (i.e., level 1), then goes through herbivorous species including insects and fish (level 2) and finally ends with carnivores such as rodents, snakes and hedgehogs (levels 3, 4 and sometimes 5, which depends on presence of larger predators). Thus, the trophic levels are represented by the number of steps of the food chain. In an ecosystem, the organisms can also be classified according to the mode of obtaining the food in producers (autotrophs), consumers (heterotrophs) and reducers (detritivores).
some flowering plants are pollinated by honeybees at some time in the past honeybees evolved the ability to see ultraviolet radiation some flowers have evolved to produce ultraviolet markers on their pedals that direct honeybees to the reproductive parts of the flower what is this example of?
Answer:
Coevolution
Explanation:
Coevolution refers to the mechanism where two or more species interact by the evolutionary process of natural selection. The mechanism of coevolution was mentioned by Darwin to explain the existing interactions among flowering plants and insects, in a similar manner to the example above described. Examples of coevolution also include the race between pathogenic organisms and the immune responses or the emergence of resistance in pathogens that affect genetically modified (originally resistant) crop varieties.
Burning fossil fuels is associated with a. climate cooling periods b. an enhanced greenhouse effect c. increased solar activity d. increased solar reflectivity
Answer:
B. An enhanced greenhouse effect
Explanation:
When fossil fuels are burned, they release large amounts of carbon dioxide, a greenhouse gas, into the air. Greenhouse gases trap heat in our atmosphere, causing global warming.
Already the average global temperature has increased by 1C.
Answer:
An enhanced greenhouse effect
Explanation:
Fossil fuels release carbon dioxide and nitrous oxide, both of which are greenhouse gases. This leads to greenhouse gas in the atmosphere and which is the greenhouse effect.
How are the current and resistance related when the voltage of a circuit is constant?
The current doubles when the resistance doubles because they are directly proportional.
The current doubles when the resistance doubles because they are inversely proportional.
The current is cut in half when the resistance doubles because they are directly proportional.
O The current is cut in half when the resistance doubles because they are inversely proportional.
Answer:
The current is cut in half when the resistance doubles because they are inversely proportional.
Explanation:
Ohm's law states that the electrical current (I) flowing in a circuit is proportional to the voltage (V) and inversely proportional to the resistance (R).
I = V/R
Similarly, increasing the resistance of the circuit will lower the current flow if the voltage is not changed.
HOPE IT HELPS.
Answer:
D
Explanation:
Is your prediction supported by the membrane potential chart?
Answer:
The membrane potential of a resting neuron is primarily determined by the movement of K+start text, K, end text, start superscript, plus, end superscript ions across the membrane. ... Zero voltage across the membrane, as measured by a voltmeter with one electrode inside and one electrode outside the cell.
Answer:
Yes, it is. The chart shows that the initial charge of the neuron is negative. When the neuron is stimulated, sodium ions enter the cell. So, the voltage inside the cell changes to positive. When potassium ions move outward, the voltage decreases until it reaches its previous state.
Explanation:
interact to produce a trait in which neither dominant gene can produce its effect in the presence of the other.
O Multiple alleles
Chromosomes
O Carriers
Sex linked genes
Answer:
A
Explanation:
after staining what should be the color of vegetative cells
Answer:
See below
Explanation:
As a result of staining the cells, while all of the cells now appear pink, the vegetative cells show some area that has not been stained pink (perhaps because they did not take up the dye). This is a clear indication that they are in their vegetative state as opposed to the normal cell growth stage as demonstrated by the remainder of the cells.
What is the relationship between coronary artery disease and a heart attack?
Answer:
C. Coronary artery disease can reduce blood flow to the heart and cause heart attacks
Explanation:
im pretty sure
Which of the following is a proposed answer to a scientific question?
hypothesis is proposed answer to a scientific question.
hope this answer is correct ..
Why were the advent of metagenomics, and the application of molecular techniques such as single-cell and next-generation sequencing, important for defining a microbial relationship
Answer:
Based on novel approaches, it has been seen that symbiotic associations prevails between a host and one to thousands of more microbes, which challenges the previous meaning of symbiotic association as one that takes place between the host and a single microbe. It was considered previously that symbiotic association’s takes place only between the pair of single microbe and host.
However, newer approaches has revealed that such kind of association can take place between one microbe and many other hosts. A symbiotic association can take place between microbe-microbe, plants-plants, microbe-plants, and others. However, symbiotic association has never been found to take place between a bacteria and animal host. The symbiotic associations are always not parasitic.
Which phrase best describes the biosphere? the rocks on land and in the water the plants on land and in the water the animals in the air, on land, and in the water the organisms in the air, on land, and in the water
Answer:
the organisms in the air, on land, and in the water
Explanation:
bc i saw quizlet
Answer:
d
Explanation:
edge 2021
Which of the following phenotypic classes reflect offspring that were generated as a result of a recombination event?
a. vestigial wings, red eyes
b. vestigial wings, purple eyes
c. full wings, red eyes
d. full wings, purple eyes
Answer:
The correct options are: A " vestigial wings, red eyes" and D "full wings, purple eyes"
Explanation:
female parent: vg+pr+/vg pr
(phenotype - full winged and red eyes)
male parent: vgpr/vgpr
(phenotype - vestigial winged and purple eyes)
Of these traits, vestigial wings and purple eyes are recessive traits. Hence, when a recombination event occurs, the offspring can potentially have a wild type trait paired with a recessive trait.
I don't know how to edit my original question, so I am resubmitting it. I have attached a photo with my question. I had it attached it last question too. I'm not sure if it isn't showing up. I really need help. The instructions are to label the arrows in the slide image below with the appropriate stage of the cell cycle.
Answer:
The correct answer is -
A: Prophase (top left)
B: Cytokinesis (top middle)
C :Interphase (top right)
D :Telophase (bottom left)
E: Metaphase (bottom middle)
F: Anaphase (bottom right)
Explanation:
A. prophse - the first stage of mitosis, in this pahse the chromatin which is DNA and proteins, condenses in nucleus.
B. Cytokinesis - It is the physical sepration or dividion of cytoplasm of the parental cell.
C. Interphase - This phase have no change in cell except its size as it grows and enlarges itself.
D. Telophase - formation of a nuclear membrane around chromosome set to separate the genetic material from the cytoplasm.
E. Metaphase - visible chromosomes, removal of nucleus and chromosomes present in cytoplasm.
F. Anaphase - replicated chromosomes are separated and move towards opposite poles.
What common features do eukaryotic mRNA share? Please use one of these features to describe how you can isolate eukaryotic mRNA from the cell extract. (limit your answers in 4 lines)
Answer:
A common feature in mRNAs that allow extraction from the cell is the 5' cap region which has a Guanine nucleotide attached to the mRNA in an atypical five prime to five prime triphosphate linkage.
Explanation:
The 5' cap structure serves to protect the mRNA against damage from RNA phages and an extraction protocol an be used to isolate the mRNAs from the cells. Reagents such as Dichloromethane, sodium hydroxide and diethyl ether in aqueous solution helps separate the organic layer, a silica-gel column can be used to further isolate the mRNAs
Please help me come up with an answer for this question thankyou so much! Compare and contrast the processes of cellular respiration and photosynthesis. Think of as many similarities and differences as you can (things to consider: inputs and outputs, the role of energy, the types of organisms that do each process, the location within cells)
Explanation:
The end result is glucose, with oxygen being the waste product. The two processes are similar in that they both produce energy, albeit in two different forms. They are different in that photosynthesis assembles the glucose molecule, while cellular respiration takes it apart.
The picture to the right shows Meiosis 2, which is responsible for creating: A. Haploid daughter cells with unique chromosomes. B. Diploid daughter cells with unique chromatids. C. Diploid daughter cells with unique chromosomes. D. Haploid daughter cells with unique chromatids. Reset Selection
Answer:
D. Haploid daughter cells with unique chromosomes.
Explanation:
This is because during Mitosis 2 the sister chromatids within the two daughter cells separate, form four new haploid gametes.
D. Haploid daughter cells with unique chromatids are responsible for creating.
What does meiosis 2 create?Meiosis II starts with two haploid parent cells and ends with four haploid daughter cells, maintaining the number of chromosomes in each cell.
What are the products of meiosis and meiosis II?Thus, the products of meiosis II are four haploid cells that contain a single copy of each chromosome. In mammals, the number of viable gametes obtained from meiosis differs between males and females. In males, four haploid spermatids of similar size are produced from each spermatogonium.
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what is the importance of autotrophic organisms for other organisms?
Answer:
the importance of autotrophic organisms with respect to energy flow and nutrient cycling in ecosystems. Primary producers usel solar or chemical energy to manufacture their own food and they use this energy through cellular respiration and growth and reproduction--energy used for NPP.
A scientist thinks that a certain chemical is a mutagen. She exposes plant cells to a large amount of this chemical in
the laboratory
Which statement best provides evidence that the substance is a mutagen?
The cells die within hours of being exposed to the chemical.
The cells grow more quickly than those that were not exposed to the chemical.
The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.
The cells continue to divide at the same rate as before they were exposed to the chemical.
Answer:C
Explanation:it’s 100% C
If a scientist thinks that a certain chemicals is a mutagen and expose plant cells to a large amount of such chemical in the lab, the statement that best provides evidence that the substance is a mutagen would be that the cells change after being exposed to the chemical, and this change is passed to the next generation of cells.
A mutagen is generally described as a chemical that is capable of causing mutation in cells. Mutation in itself refers to heritable changes to the genome of a cell or an organism.
Hence, if a chemical is suspected to be a mutagen, such chemical must be able to cause mutation in the cells if they are exposed to it in large amount. The chemical should force some changes to the cell and the changes should be inheritable by the next generation of cells.
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What was an unintended negative environmental consequence of improved technology in agriculture?
A. Farmers went bankrupt purchasing expensive equipment.
B. Modern technology allowed for larger expanses of land to become cultivated, so farming took over many natural areas that were important for wildlife
C. Machines took away jobs commonly performed by farm workers
D. Machines diminished the quality of the crops.
The correct answer is B. Modern technology allowed for larger expanses of land to become cultivated, so farming took over many natural areas that were important for wildlife.
Explanation:
In the last decades, the creation of agricultural technology has increased the efficiency of growing crops. This means now, all the process is more efficient, which leads to more products to be sold and an increase in profit. However, the possibility of large scale agriculture has caused more land is used for this purpose. This often implies natural ecosystems such as forests are destroyed and the land of these ecosystems, which is usually rich in minerals, is used for extensive agriculture. This is a negative consequence of agricultural technology as natural areas important for wildlife are taken for human profit.
Answer:
B
Explanation:
Penn Foster
Genral Science
Page 14
Ms. Fisher is a 68-year-old woman with the classic symptoms of gallbladder disease. She is diagnosed with gallstones and is scheduled for surgery in 2 weeks . She asks you about the cause of gallstones and why she would develop them. How would you respond to her?
Answer: I will respond as this;
Gall stones develop from the chemical makeup imbalance of the bile inside the gall bladder which can increase in the levels of cholesterol, and cholesterol levels is increase, the excess form into stones.
Mrs Fisher can develop gall stones because she is 40 years and above and she is a female. Age and sex are the risk factors of gall stones
Explanation:
Gallstones are solid particles that are developed from bike cholesterol or bilrubin build up.
It Is caused by can increase in the levels of cholesterol, and cholesterol levels is increase, the excess form into stones.
Symptoms include .
The most common symptom is pain in the right upper part of the abdomen.
nausea and vomiting,
fever,
indigestion, belching, bloating,
intolerance for fatty or greasy foods, and
jaundice (yellowing
Mrs Fisher can develop gall stones because she is 40 years and above and she is a female. Age and sex are the risk factors of gall stones.
Women that had have children also are at risk of having gall stones.
The most effective treatment is surgical removal of the gallbladder, or cholecystectomy
The terms ________ and immunoglobulin are often used interchangeably. They are found in the blood and tissue fluids, as well as many secretions.
Answer:
the answer is antigen.
The volume of a right circular cylinder can be approximated as follows:
Volume = πr2h;
where r is the radius of the cylinder and h is the height of the cylinder;
π is a constant that is roughly equal to 3.
Using the simple approximation above, calculate the volume of a right circular cylinder with a radius of 2 meters and a height of 9 meters.
A.
2,916 m3
B.
14 m3
C.
108 m3
D.
324 m3
The correct answer is A.2,916 m3.
What is circular cylinder?A circular cylinder is a three-dimensional geometric shape that consists of two parallel circular bases and a curved lateral surface that connects the two bases. The shape of a circular cylinder resembles a can or a pipe, and it is a common shape in everyday objects and engineering applications.
To calculate the volume of a right circular cylinder with a radius of 2 meters and a height of 9 meters, we need to plug in the given values into the formula: Volume = πr2h. Since π is a constant that is roughly equal to 3, we can use 3 in place of π.
Therefore, the volume of the cylinder is equal to 3 x (2 meters)2 x (9 meters), which is equal to 2,916 m3.
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a) List three examples of ruminant livestock. b) Describe how ruminant cattle digest food? c) Why do cattle produce more methane than other types of animals?
Answer:
a)Ruminants include cattle, sheep, goats, buffalo, deer, elk, giraffes and camels. These animals all have a digestive system that is uniquely different from our own. Instead of one compartment to the stomach they have four. Of the four compartments the rumen is the largest section and the main digestive centre.
b)Digestion in ruminants occurs sequentially in a four-chambered stomach. ... The mass is finally passed to the true stomach, the Abomassum, where the digestive enzyme lysozyme breaks down the bacteria so as to release nutrients.
c)The difficult-to-digest grass ferments in the cows' stomachs, where it interacts with microbes and produces gas. Thus,cattle produce more methane than other types of animals.
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. As biochemists we are aware that the sequence of proteins influences their 3D structure and that these structures ultimately define the final function of each protein. Give these facts explain how the sequence and structure of K+ channels influence what ions are to be transported.
Answer:
See below
Explanation:
Potassium channels have the ability to allow only potassium ions to pass through with a remarkable accuracy. This is achieved due to the presence of a selectivity filter. There are 8 molecules of water that surround this filter. If the K+ ion is to go through the filter, it will have to lose these molecules. The dimensions of this pore, as determined by its 3D structure, correspond only to the K+ ions and not Na+ ions which are smaller in size and thus, will not be able to pass through the filter.
A karyotype shows that a child has Klinefelter syndrome (47,XXY). If the child is also color-blind (due to a recessive X-linked allele), despite his parents having normal color vision, in which parent and stage of meiosis did nondisjunction occur?
Answer:
It occurred in the mother and in meiosis II stage
Explanation:
A karyotype shows that a child has Klinefelter syndrome (47,XXY) which involves a male child having an XXY chromosome in which the XX chromosome codes from the mother.
If the child is also color-blind (due to a recessive X-linked allele), despite his parents having normal color vision then the nondisjunction occurred in meiosis II because sister chromatids separate during meiosis II and the non separation is the reason for the Klinefelter syndrome.
How did Dinosaurs diminished from earth?
Answer:
Hey there
It is believed that the dinoursars diminished from earth through a massive meteorite which weight 2 trillion tons which hit the earth causing maximum heat and it killed all the dinoursars
Explanation:
Have a nice day
Knowing the epidemiology and causative agent of Legionaries disease what questions would you ask of the victims or of their surviving relatives?
Answer:
Answered below
Explanation:
Legionnaires disease is a type of lung inflammatory disease or pneumonia, which is caused by infection from the bacteria Legionella bacterium.
Legionella bacterium can be spread by inhalation from water or soil. People with weakened immune systems are most susceptible as are smokers. Untreated legionnaires disease can progress to a fatality.
Some of the questions to ask of a victim or of surviving relatives include;
1) Any visits to swimming pools?
2) Source of drinking water?
3)Any visits to fountains?
4) Contacts with victims and their personal belongings?
5)Is any relative or victim immunocompromised? Do they have diseases that might lower their immune response?
6) Are they smokers?
Explain why chemogenetic based methods of regulating cellular signaling result in poor temporal control of biochemical pathways relative to optogenetic based methods.
Answer:
They use different detecting methods to assess neuronal circuits
Explanation:
Chemogenetics is a technique widely used in neuroscience research to explore signaling interactions by means of genetically modified receptors capable of interacting with small molecules. Chemogenetics was first used to determine the function of the chalcone isomerase gene by inducing mutations that altered its substrate specificity. On the other hand, optogenetics is a bioluminescence-driven genetic technique used to control genetically modified neurons that express light-gated ion channel genes. This technique is also used to monitor neuronal networks. In consequence, optogenetic and chemogenetic techniques have recently been combined in order to analyze neuronal circuits, it by analyzing the same actuator molecule.
ions but you do not want to increase the volume of the blood by reabsorbing large amounts of water from the filtrate. Assuming the aldosterone and ADH are both present, how would you adjust the hormones to accomplish the task
Answer:
Aldosterone and ADH are part of the renin angiotensin aldosterone system, this system is a system regulated by the kidney and lungs to be able to raise blood pressure.
Explanation:
This system is a retainer of liquids and water, to increase the blood volume of our body, in this way arterial hypotension is compensated.
Another mechanism with which blood volume can be increased is with the stimulation of thirst, and the need to ingest a liquid because of the dry mouth that our central nervous system perceives.
Both mechanisms prevent hypotension and dehydration.
Which list below describes a possible path of rain through the water cycle? (2 points) Group of answer choices Evaporation, condensation, precipitation, runoff Runoff, ocean storage, evaporation, condensation Transpiration, condensation, precipitation, runoff Evaporation, precipitation, runoff, lake storage
Answer:
evaporation,condensation,precipitation,runoff
Answer:Evaporation, condensation, precipitation, runoff