Enzymes in living organisms typically work best near the pH of the tissues where they are found; you would predict that the pH optimum for pepsin would be near ________
a. 7
b. 2
c. 4
d. 11
b
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One plasma cell can synthesize approximately ________ antibody molecules per second.
A. 2000 B. 200,000 C. 20,000 D. 200
Which antibacterial protein in human milk, produced in transgenic goats, may protect infants and children in developing countries from acute diarrheal disease?
A. Human hepcidins B. Lysozyme C. Human dermcidin D. Antimicrobial neuropeptides E. Human defensins
A saclike cell in which spores form by meiosis is known as
A. ascus. B. mycelium. C. hypha. D. basidiocarp. E. mycorrhiza.
Place each of the following terms with the correct statement.coevolutiondefensive colorationcamouflagesecondary chemical compoundsBatesian mimicryIs the process by which different kinds of organisms adjust to one another by genetic change over long periods of time.
Fill in the blank(s) with the appropriate word(s).