Answer:
False
Explanation:
It is false because melanin is a GENE that causes color in fur, skin, hair etc..
I hope it helps! Have a great day!
Pan~
Answer:
False
Explanation:
Melanin is a gene not a protein, although melanin does cause the color in animal’s fur.
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Anygays-
mRNA: U-A-C
What is the complementary tRNA sequence for the three mRNA bases above?
T-T-G
Thymine pairs with Adenine & Uracil
Guanine pairs with Cytosine
The pulmonary circulation conveys blood that is ______ in oxygen to the lungs before returning back to the ______ side of the heart.
The pulmonary circulation conveys blood that is low in oxygen to the lungs before returning back to the left side of the heart.
The pulmonary circulationThe circulatory system is divided into two main parts namely:
pulmonary circulation and systemic circulation.The pulmonary circulation involves the movement of blood between the lungs and the heart.
Blood from the systemic circulation returns to the right side of the heart where it is pumped through the pulmonary artery into the lungs to be oxygenated.
After oxygenation has taken place in the lungs, the blood returns to the left side of the heart through the pulmonary veins.
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15. A diploid cell is one that a. has two homologues of each chromosome. b. is designated by the symbol 2n. C. has chromosomes found in pairs. d. All of the above
During prophase I, all four chromatids of the two homologues become closely associated as a result of pairing, forming a structure known as a(n)
During prophase I, all four chromatids of the two homologues become closely associated as a result of pairing, forming a structure known as a tetrad or bivalent.
What is a tetrad?A tetrad is a structure formed during the prophase I stage of meiosis I whereby two homologous chromosomes pair together.
Meiosis occurs in two stages of division namely;
meiosis I meiosis IIIn meiosis I, homologous chromosomes are separated but are first paired during the prophase stage to form the tetrad or bivalent structure.
Therefore, during prophase I, all four chromatids of the two homologues become closely associated as a result of pairing, forming a structure known as a tetrad or bivalent.
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PLEASE HELP DUE IN 10 MIN
Answer:
what are the options
Explanation:
Baleen whales have structures in their mouths that let them filter objects out of water. what do these structures do for the whale? question 2 options: provide movement. help them find a mate. help them obtain resources. help them defend against predators.
Baleen whales have structures in their mouths which help them to obtain resources.
What is a Baleen?This is referred to as slender keratin plates that hang from the upper jaw of Baleen whales.
Tbis helps this type of whales to obtain many resources such as preys together at a time thereby making option C the most appropriate choice.
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According to the second law of thermodynamics, heat energy released by an organism is _____.
absorbed by plants for photosynthesis
used by another animal
gone forever
released into the environment and unusable
Answer:
released into the environment and unusable. (Entropy)
Explanation:
Answer: released into the environment and unusable
Explanation:
have a good day
The amniotic egg, which is present in reptiles, birds, and mammals, is a good example of: horizontal gene transfer. coevolution. homology. convergent evolution. analogy.
The amniotic egg, which is present in animals such as reptiles, birds, and mammals, is a good example of homo-logy.
What is homo-logy?The term 'homo-logy' makes reference to the same evolutionary origin (ancestor) for a given structure.
A structure and/or sequence is homo-logous when it derives from the same evolutionary ancestor.
Conversely, an analogy means that the structure and/or nucleotide sequence do not share an evolutionary origin.
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4. Prokaryotes differ from eukaryotes in that prokaryotes
A) have only a nucleus, cell membrane, and cytoplasm
B) have ribosomes and mitochondria
C) have a true nucleus and may have a cell wall
D) lack a true nucleus but may have a cell wall
E) lack DNA but can synthesize proteins
What is the right answer?
Answer:
D
Explanation:
prokaryotes are things like bacterial cells , they have no true nucleus just a long ring of dna.
Eukaryotes are things like animal cells they have a nucleus (opposite of prokaryotes)
What general term is used to describe the introduction of foreign dna into a cell?.
9. What is one thing that plants living in the ocean do not have to worry about?
Answer: The thing they don't have to worry about is not getting enough water, b/c they live in it!
Answer:
water
Explanation:
this is because they have adapted to absorb all the water and carbon dioxide they need from the water they live in.
What is the main difference between your ventricles and your atria?.
Answer:
The two atria are thin-walled chambers that receive blood from the veins. The two ventricles are thick-walled chambers that forcefully pump blood out of the heart.
Explanation:
hope this helps
Can someone please help me? :(
Answer:
B
Explanation:
only option that reduces the use of motorized vehicles
Answer:
B. Building new bike paths in the city.
Explanation:
This is the most possible way since...
If there are more bike paths, then there are more ways that they are going, which means more usage of them. If there is going to be more usage of them, then there is going to be less usage of cars in the city.So hence, your answer is B. Building new bike paths in the city.
Now, let's look WHY are the other ones NOT the right answer:
A. Widening roads throughout the city
This just won't do anything, rather, it will make drivers more want to go on the road since the roads are wider and easier to drive on.
B. Buliding new bike paths in the city
this is the right answer, for explanation, look above
C. Expanding the city into nearby areas
There is no use of the city being expanded, that way, if you live in one corner of the city, and your office is in the other side, then you wouldn't want to use your bike, you'll want to use the car, which is what you don't want to do.
D. Raising the price of riding the city bus
Not helpful either, this won't help that much, since 1 job will lose, 2nd, people who don't know how to drive or are pregant(probably can't ride a bike) won't be able to travel. And last, it's just so selfish..
So from all these conclusions, we can see that B is truly the answer.Buliding new bike paths in the city.-------------------------------------------------------------------------------------------------------"The beautiful thing about learning is that no one can take it away from you!" B.B.King
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3. Explain why the CO2 levels from automobiles and
industry are unable to be cycled into the carbon
cycle like normal cellular respiration.
someone answer please I need someone to answer
During which phase of meiosis do the homologous chromosomes line up across from each other in the center of the cell?
Answer: In metaphase I, homologous chromosomes line up along the center of the cell in order to be pulled apart.
Explanation:
Meiosis is the type of cell division in the germinal cells. In metaphase I of meiosis, the homologous chromosomes line up across from each other in the center of the cell.
What is metaphase I?Metaphase I is one of the stages of meiosis I in which the duplicated homologous chromosome pairs align at the center of the cell along the midline and are connected through the centrioles.
In prophase I the homologous chromosomes are created and in anaphase I, the aligned chromosomes move towards the opposite poles so that after division each cell has the same number and equal composition of chromosomes.
Therefore, in metaphase I the homologous chromosomes are aligned at the midline.
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8. What are some of the surface features on Venus that are similar to the Earth?
Answer:
About the same size, they weigh about the same, and are made up of very similar materials, plus there beside each other/ neighboring planets.
Explanation:
1. Which of the following is NOT an example of cell migration as a part of cell differentiation?
A.
mesenchyme cells forming mesoderm during gastrulation
B.
primitive streak formation in a chick embryo
C.
concentration of protein complexes during cleavage
D.
convergent extension to elongate the archenteron in the sea urchin
2 .What is the role of cleavage in embryonic development?
A.
Cleavage allows for rapid development of a large number of smaller cells.
B.
Cleavage promotes differentiation of cells into germ layers.
C.
Cleavage prevents polyspermy.
D.
Cleavage plays a role in apoptosis, not in embryonic development.
The option that isn't an example of cell migration as a part of cell differentiation is C. concentration of protein complexes during cleavage
What is a cell?It should be noted that a cell simply means the basic unit of life. Cell migration is the evolutionary process that allows cells to move.
The role of cleavage in embryonic development is that cleavage plays a role in apoptosis, not in embryonic development.
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Which occurs during translation?
mRNA is created by using a DNA template.
mRNA codons are joined by tRNA anticodons to assemble amino acids to form a protein.
Protein is formed when a polypeptide chain is broken apart and released from ribosome.
One strand of DNA is copied into a strand of rRNA.
B. mRNA codons are joined by tRNA anticodons to assemble amino acids to form a protein.
The correct amino acids are brought to the ribosome by tRNA.
mRNA codons are joined by tRNA anticodons to assemble amino acids to form a protein is occurs during translation.
What are the steps of translation?Translation is the procedure by which the mRNA codes for a specific protein. All the while, the ribosome interprets the mRNA created from DNA into a chain of explicit amino acids.
In the pathway of gene expression, protein synthesis is an essential process and a crucial control factor. Translation regulation is essential for maintaining homeostasis in both the cell and the organism and plays a prominent role in most cell processes.
Translation is the process of making a polypeptide chain from mRNA codons. tRNA charging, initiation, elongation, and termination are the four stages.
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if two organisms have the same name in it does it mean they are closely related?
Answer:
yes
Explanation:
similar structure can indicate relatedness
O A. Spindles
O B. Chromatids
O C. Centromeres
O D. Gametes
Answer:
D. Gamates
Explanation:
Meiosis is a cell division that ends up producing gamates as sperm or egg cells.
4. Changing the temperature affects the shape of an enzyme How might an incred
temperature affect the enzyme's function in the cell?
Answer:
Higher temperatures disrupt the shape of the active site, which will reduce its activity, or prevent it from working. The enzyme will have been denatured . Enzymes therefore work best at a particular temperature. Proteins are chains of amino acids joined end to end.
Explanation:
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how is the level of thyroxine controlled gsce
Explanation:
Its levels are controlled by negative feedback. The hypothalamus and pituitary gland have important roles in detecting and controlling thyroxine levels. Low thyroxine levels in the bloodstream stimulate the hypothalamus to release TRH and this causes the pituitary to release TSH so the thyroid releases more thyroxine.
Which classification category contains the greatest number of different types of organisms?.
Answer:
the classification kingdom
help please
A cell is in a solution that contains dissolved oxygen. What occurs when the cell uses oxygen for respiration?
A.
Oxygen will be carried across the cell membrane by special transport molecules.
B.
Oxygen will be held in place within the solution by special transport molecules.
C.
Oxygen in the cell will naturally diffuse into the solution.
D.
Oxygen in the solution will naturally diffuse into the cell.
Answer:
D.
Explanation:
As the oxygen inside the cell is utilized by the cell for respiration, therefore the concentration of oxygen inside the cell decreases and the oxygen in the solution naturally diffuses inside the cells through simple diffusion.
What is dissolved oxygen?
Dissolved oxygen is the amount of oxygen that is dissolved in a particular solvent. The dissolved oxygen in water comes from the atmosphere. The aquatic plants that produce the oxygen also contribute to the dissolved oxygen in water bodies.
Aquatic organisms require dissolved oxygen for respiration as they cannot take up oxygen from the atmosphere. Oxygen in water can be measured as milligrams per liter or the percent saturation.
In the RBCs, the oxygen combines with the hemoglobin and is transported by hemoglobin-facilitated diffusion or through simple diffusion in which the oxygen crosses the plasma membrane and is transported to the blood plasma through diffusion.
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cereal is a soup change my mind B) EZ
The systemic circulation is movement of blood from the ______ side of the heart to the systemic cells of the body and back to the ______ side of the heart.
Systemic circulation involves the movement of blood from the right ventricle of the heart to the cells of the body and back to the heart through the right atrium.
Systemic circulationIt is a form of blood circulation through which functional blood is supplied to all the cells and tissues of the body.
The system starts with oxygenated blood leaving the right side of the heart through the ventricle.
The blood travels through arteries to different cells/tissues of the body, supplies them with oxygen and vital nutrients, and picks up waste materials simultaneously.
Deoxygenated blood then travels through veins back to the heart through the right atrium.
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In this group, which percentage does the green seed
represent?
O 25%
O 50%
O 75%
Yellow
Yellow
O 100%
Yellow
Green
How are spores similar to seeds?
Answer:
Spores grow and spread, similar to seeds, yet only in a larger amount.
__________________________________________________________
Questions?Ask in the comments box.
Your body needs a constant supply of oxygen for cellular respiration to produce the ATP needed to fuel your body processes. When you exert yourself in a strenuous workout the oxygen demands of your muscle cells quickly outpace the oxygen your body can provide. Skeletal muscle cells that have an insufficient oxygen supply to allow aerobic respiration to continue will undergo lactic acid fermentation. Refer to the model above. Predict what changes will occur when your body shifts from aerobic respiration to anaerobic respiration (lactic acid fermentation). Select ALL that apply.
Answer:
When you exert yourself in a strenuous workout the oxygen demands of your muscle cells quickly outpace the oxygen your body can provide. Skeletal muscle cells that have an insufficient oxygen supply to allow aerobic respiration to continue will undergo lactic acid fermentation.When you exert yourself in a strenuous workout the oxygen demands of your muscle cells quickly outpace the oxygen your body can provide. Skeletal muscle cells that have an insufficient oxygen supply to allow aerobic respiration to continue will undergo lactic acid fermentation.
Explanation:
