Explain why the liver has a major role in protein metabolism. What will be an ideal response?
The liver helps maintain homeostasis by adding amino acids to the blood and converting
excess amino acid acids to fatty acids and urea.
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Blocking polyomavirus SV40's ability to integrate its genome into host cells would
A) avoid cancer development from the virus. B) increase the rate of transformation. C) increase the latent period of SV40. D) switch SV40 into a lytic lifecycle which would be especially harmful to the host cells.
Methanogens may contribute to the greenhouse effect and global warming due to methane production.
Answer the following statement true (T) or false (F)
Which of the following reactions is most likely to be exergonic? Select all correct choices
A. the synthesis of a phospholipid from glycerol and fatty acids B. the replication of DNA from free nucleotides C. the formation of cellulose from individual glucose molecules D. the digestion of protein from food into amino acids
A person's blood pressure has fallen below normal as the person has quickly jumped out of his or her chair where he or she had been relaxing. All of the following reflect events in restoring the blood pressure to normal EXCEPT which one?
A) The heart rate will decrease. B) The baroreceptors will detect the drop in blood pressure. C) The medulla oblongata will send signals to the heart and to the blood vessels. D) The force of contraction of the heart will increase. E) Vasoconstriction of a number of arterioles will increase blood pressure.