Answers
Answer:
Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features). Similarities and differences among biological molecules (e.g., in the DNA sequence of genes) can be used to determine species' relatedness.
Explanation:
The correct statement is C. They demonstrate how different species differ and which creature created the structure first. Anatomical characteristics observed in several species that have a common ancestor include what are known as homologous structures.
Although these structures may have diverse purposes in many creatures, their similarities suggest that they had an ancestor.
The anatomical characteristics of several creatures may be compared to find homologous structures and deduce evolutionary links.
Because diverse kinds of creatures have homologous features, it is likely that these qualities were passed down from a common ancestor.
Similarity levels and common anatomical patterns might shed light on a species' evolutionary path.
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Related Questions
Which term describes the idea that Earth’s landforms change at a constant, steady rate?
Answers
The respiratory system is lined with a tissue layer known as the mucous membrane. We discussed how this layer helps to alter the incoming air in three important, beneficial ways. Explain the three ways the mucous membranes alter the incoming air and the benefit of each of these alterations
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Warming, add moisture and trap depris are the three ways the mucous membranes alter the incoming air.
Role of mucous in breathingNasal mucous membranes are lined with small blood vessels that help to warm as well as humidify the air you breathe. They are also lined with cilia which is a tiny hair-like structures that help to trap the debris that you breathe in during inhalation.
So we can conclude that warming, add moisture and trap depris are the three ways the mucous membranes alter the incoming air.
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What structures in the human body carry out some of the same function as xylem and pholoem
Answers
Answer:
Veins arteries and capillaries
The structures in the human body that carry out some of the same function as xylem and phloem are veins, arteries, and capillaries.
What do you mean by Xylem and Phloem?Xylem and phloem are the vascular tissues that transport water, minerals, and food from the roots to the leaves and from the leaves to the roots respectively.
Xylem and phloem represent homology with the veins and arteries. Veins carry blood back towards your heart, while arteries carry blood away from your heart.
Capillaries are blood vessels that carry the oxygen and nutrients from the blood and transport them into the tissues and organs. It also requires the elimination of the waste products away from your tissues.
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While walking a cornfield, you notice roots emerging from the corn stalks themselves, and you suspect that these roots are helping to hold the plants upright. these roots belong to a category of roots known as ________.
a) taproots.
b) fibrous roots.
c) adventitious roots.
d) root hairs.
e) special roots.
Answers
Since fibrous roots grow from the side of monocot plants, the plant roots observed on the corn stalk are fibrous roots.
What are fibrous roots?Fibrous roots are roots of plants which are usually seen on the surafce above ground and which grow from the side of plants.
Monocotyledons such as corn have fibrous roots.
The fibrous roots help to provide support and strength to the plant.
Therefore, the plant roots observed on the corn stalk are fibrous roots.
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Amoeba Sisters: Video Recap Pedigrees HELP
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Based on inheritance patterns, se_x-linked traits are present on the se_x chromosomes while autosomal traitsare found on the autosomes.
What is a dominant allele?A dominant allele is a copy of a gene which always appears in every generation.
A pedigree is a chart that shows the inheritance of triats in generations of families.
Based on the pedigree given:
The genotype of the individual #1 is XBXb since the offspring are XBXb and XbYIn the pattern of inheritance, all males receive their X chromosome from their mother.
Se_x-linked pedigrees differ from autosomal pedigrees because the traits are located on the se_x chromosomes.
An autosomal dominant trait require only one allele.
Based on the pedigree, the genotype of the offspring are hH, hH and hH based on the genotype of the parents.
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How do Antibodies help fight Infections/viruses and bacteria in our body
Answers
Answer:
The acquired immune system produces special molecules (known as antibodies) with the help of immune cell system that protects the body against a specific intruder. After the body has been exposed to the invader, cells called B lymphocytes produce antibodies. Antibodies remain in your child's system.
The threadlike structures found in the nucleus of each human cell and made up of deoxyribonucleic acid are called.
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can someone help me out with this? i truly don't understand it :]
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Hi! I believe the answer is D. The sun's gravity keeps the earth from floating away (which is what the blue arrow represents). It's being constantly pulled towards the sun, keeping it in orbit (represented by the purple arrow)
I'm not quite sure what the pink arrow is supposed to be
Let me know if you still don't understand :)
What process creates the carbohydrates in this ecosystem?
Answers
Answer:
Photosynthesis creates the carbohydrates in the ecosystem.
Explanation:
Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants.
Since the atoms in sugar come from water and air, plants are built mainly from material in blank and blank
3:54 4/5/22
Answers
Answer:
look im not 100% sure but i beleive it would be Carbon Dioxide and Sunlight
Explanation:
Sorry if im wrong
The section of dna being used to make the strand of mrna is known as a.
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The section of DNA being used to make the strand of mRNA is known as the transcription unit.
What are transcription units?Transcription units are base sequences of DNA that make up a single mRNA molecule during the process of transcription.
During gene expression, genes are first transcribed to genetic codes in mRNA molecules before being translated to their respective proteins.
Each unit of transcription represents a gene along with non-coding base sequences in DNAs, otherwise known as introns.
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A sample of DNA contains 120 nucleotides, if 35 nucleotides are Guanine, how many nucleotides are Thymine?
(If you can show how you do it that would be great)
Answers
Answer:
25
Explanation:
In DNA, Guanine pairs with Cytosine, and Thymine pairs with Adenine. This tells us that there are equal numbers for each Guanine and Cytosine, and Thymine and Adenine. When there's 35 Guanine, there should be 35 Cytosine that goes with it. 120 - 2(35) = 50. The remaining 50 nucleotides are Thymine and Adenine, and since they are the same number, divide 50 by 2. 50 ÷ 2 = 25. There are 25 thymine in the sample of DNA.
Explain how most of the electricity consumed in the US is produced.
Will report answers with links
Please use your own words
Answers
Answer:
Most electricity is generated with steam turbines using fossil fuels, nuclear, biomass, geothermal, and solar thermal energy, etc.
Explanation:
How does natural selection enable species to changes their body shape, appearance, and/or size over time? *
A) Individuals that are better adapted to their environment survive and reproduce.
B) Overproduction provides food for stronger members of the species.
C) Environmental changes kill weaker members of the species.
Answers
Answer:
A
Selective pressures( Predators, less food etc. ) will cause the less fit variation of a species to decrease in population, causing them not to be able to reproduce. The more fit variation would be able to reproduce more so that over time, the individuals in the species will have the features of the more fit variation.
Which element provides strength to the exoskeletons of clams and oysters?
sulfur
oxygen
hydrogen
phosphorus
Answers
Answer:
phosphorus
Explanation:
Since Phosphorus is an essential component of phospholipids, nucleic acids, phosphoproteins (casein), high energy phosphate esters (ATP), hexose phosphates, creatine phosphate, it also provides strength to the exoskeletons of clams and oysters.
Answer:phosphorus
Explanation:
The bulk of each tooth consists of a mineralized matrix similar to that of bone called:.
Answers
Dentin is the answer
Rods and cones are similar in that they both _____.
Answers
Answer:
Explanation:
Rods and cones are similar in that, they both are parts of the retina and are responsible for vision. Other than that, their functions are complete opposite of each other.
can someone help me with these three?
Answers
For the worm one the answer is also C. The team needs to demonstrate that the worm size is resulting from differential feeding in each treatment group and not some other factor.
I already answered the sickle cell one for you and again the answer is C
Explain the stages of ecological succession. Choose either Primary or Secondary succession and then explain the stages of ecological
succession.
A good essay will be 5-6 sentences and will include:
A) What kind of natural disaster caused the ecological succession
B) Types of plants found in each stage (ex: trees, shrubs, grasses, etc.)
Answers
Answer:
Label E
Label E
Explanation:
Label ELabel ELabel ELabel E
HURRY PLEASE DUE IN 6 MIN
WHAT ARE THE SOURCES OF THE SUNS ENERGY?
WHAT DO ELECTRICITY CHARGED PARTICLES FROM THE SUN CAN STRIKE IN EARTHS MAGNETOSPHERE TO LEAD TO THE PRODUCTION OF SHEETS OF LIGHT KNOWN AS AURORAS?
WHICH LAYER OF THE SUN HAS THE DENSEST MATERIAL?
Answers
Answer:
The sun is a star, this means the sun generates energy from a process called nuclear fusion. During nuclear fusion, the high pressure and temperature in the sun's core cause nuclei to separate from their electrons. Hydrogen nuclei fuse to form one helium atom. During the fusion process, radiant energy is released.
In the north, the display is called aurora borealis, or northern lights. In the south, it is called aurora australis, or southern lights. The activity that creates auroras begins on the sun. The sun is a ball of superhot gases made up of electrically charged particles called ions. I got u bro.
Explanation:
How did gravity affect the growth of the germinating corn seeds?
Answers
Answer:
see below
Explanation:
their roots respond positively, growing down, into the soil, and their stems respond negatively, growing upward, to reach the sunlight.
Gravity influenced the growth of germinating corn seeds by providing the directional cue for root growth and promoting proper orientation of the plant.
Gravity plays a crucial role in plant growth and development, particularly during the germination of seeds. When a germinating corn seed is placed in a gravitational field, gravity acts as a guidance mechanism for the growing seedling.
In response to gravity, the root of the germinating seed grows in a downward direction, a process known as gravitropism or geotropism. This downward growth of the root is called positive gravitropism. The root responds to the gravity stimulus by redistributing auxin, a plant hormone, towards the lower side of the root. This causes cells on the lower side of the root to elongate more than cells on the upper side, leading to downward growth. The downward growth of the root helps anchor the plant in the soil and facilitates water and nutrient absorption from the ground.
Simultaneously, gravity also influences the shoot of the germinating corn seed. The shoot exhibits negative gravitropism, where it grows upward against the force of gravity. This upward growth is counterbalanced by the downward growth of the root, allowing the plant to establish proper orientation.
Without the presence of gravity, the germinating corn seeds would not be able to establish the proper orientation and direction of growth. The root may not grow downward, leading to irregular and inefficient water and nutrient absorption. The shoot may not grow upward, resulting in an abnormal and compromised overall plant structure.
Therefore, gravity serves as a crucial external factor that guides the growth of germinating corn seeds, ensuring proper root development, anchorage, and shoot orientation for successful plant growth.
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Both liver cells and lens cells have the genes for making the proteins albumin and crystalline. However, only liver cells express the blood protein albumin and only lens cells express crystalline, the main protein in the lens of the eye. Both of these genes have enhancer sequences associated with them.
The claim that gene regulation results in differential gene expression and influences cellular products (albumin or crystallin) is best supported by evidence in which of the following statements?
Liver cells possess transcriptional activators that are different from those of lens cells.
Liver cells and lens cells use different RNA polymerase enzymes to transcribe DNA.
Liver cells and lens cells possess the same transcriptional activators.
Liver cells and lens cells possess different general transcription factors.
Answers
The correct statement is liver cells possess transcriptional activators that are different from those of lens cells.
What are Transcriptional activators?Transcriptional activators are specific protein sequences capable of activating gene expression.
These transcription factors (transcriptional activators) act to regulate gene expression in target cells.
Transcriptional activators are factors that enable the expression of certain genes in particular cell types.
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What percentage codes for proteins, make up our bodies
Answers
Answer:
Only 1%
Explanation:
Answer:
If you sort through the three billion letters that make up the human genome, you find some surprising things. Only about 1% of the three billion letters directly codes for proteins. Hope this helps!
Explanation:
What is the shape of DNA when it is not undergoing replication?
Answers
Explanation:
If DNA replication does not occur, then the cell cycle will not proceed to the next stage and the subsequent division will not happen. It will lead to cell death.
You are looking at a specimen under the microscope, what would you use to adjust the light being focused in on the slide?.
Answers
Condenser Lens is located under the stage which is responsible for focusing the light on the specimen.
What is Condenser Lens?The condenser lens collects light from sources and redirects the light beam so that it falls on the projector's lens system.
So we can conclude that condenser Lens is located under the stage which is responsible for focusing the light on the specimen.
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You created a formula in cell c8. When you copy the formula into cell d8, which action are you taking?.
Answers
We are changing the content in the formula to the content in cell D8.
What cells is the question referring to?The question refers to the cells that we find in computer data processing programs that include a spreadsheet as the main tool.
In these programs we can edit each cell with different information and include formulas so that the cell data depends on others.
According to the situation presented, the first action we performed was to establish a formula in cell C8 to obtain the result of an operation in that cell. Later, we change it to cell D8, then we will see the result of that same operation in cell D8.
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This Is Multiple Choice!!!
The motion of the Earth is modeled here as it moves on its axis and around the Sun. Which of these statements correctly identifies
how the illustration supports the concepts of seasons on Earth? Select ALL that apply.
A)
The tilt of the Earth is responsible for the seasons.
B)
The rotation of the Earth is responsible for the seasons
Eliminate
c)
The proximity of the Earth to the Sun is responsible for the seasons.
D)
The revolution of the Earth around the sun is responsible for the seasons.
E)
The intensity of the sunlight on Earth is different as the Earth revolves
around the sun
Answers
Answer:
this might not be right I don't know much about earth science but I believe your answer is A) D)and possibly B)
Explanation:
I hope this is right!
Answer:
its b and c
Explanation: its simple common sense like are you serious right now
Which statement correctly describes a feature of the rock cycle?
O Rocks are preserved through
the process.
O Rocks change from one type to another
Different rock groups are not related to one another.
The rock cycle follows a specific order.
Mark this and retum
Save and Exit
Next
Submit
Answers
Answer:
B
Explanation:
The statement that correctly describes a feature of the rock cycle is: Rocks change from one type to another. In the rock cycle, rocks can be transformed through different processes. The correct option is B.
What is the rock cycle?The rock cycle is a process by which rocks are transformed from one type to another through a series of physical, chemical, and biological processes. The rock cycle involves the transformation of igneous, sedimentary, and metamorphic rocks, and these three types of rocks are related to one another.
The process of the rock cycle is continuous and does not follow a specific order as rocks can change from one type to another in any direction. The rock cycle is essential to the formation and recycling of rocks on Earth.
Therefore, the correct option is B.
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What is the proper name of the plasma membrane found on a muscle fiber?
Answers
Answer:
Answered below
Explanation:
the plasma membrane of a skeletal muscle fiber is called the sarcolemma. The sarcolemma invaginates into the cytoplasm of the muscle cell (sarcoplasm). This forms membranous tubules that pass across the muscle cells.
Plant and animal cells are classified as what type of cell?.
Answers
Answer:
eukaryotic
Explanation: