Which of the following is not true of the enzyme-substrate interaction?
A) Many enzymes are extremely specific regarding a substrate.
B) Many enzymes cannot recognize a stereoisomer of their substrate.
C) Some enzymes accept any of a whole group of substrates.
D) Carboxypeptidase recognizes any of the amino acids from the carboxyl end of a polypeptide.
E) Cells are often able to carry out metabolic activity with only a handful of enzymes.
E) Cells are often able to carry out metabolic activity with only a handful of enzymes.
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Control of body temperature is an example of which
of the following? a. homeostatic mechanism b. positive feedback system c. endocrine function d. negative feedback system e. both homeostatic mechanism and negative feedback system
A common form of chemotherapy used to kill cancer cells is to administer drugs that disrupt cell division. Why might this also result in anemia, hair loss, and sores in the stomach and on the skin?
What will be an ideal response?
A Weil-Felix test was performed on serial dilutions from a patient bitten by a tick. The results obtained were positive for OX-19 and negative for OX-2 and OX-K. Based on these findings, the organism can be identified as:
a. R. rickettsii. b. O. tsutsugamushi. c. Rickettsia prowazekii. d. Rickettsia typhi.
Describe the secondary response to an antigen
What will be an ideal response?