Cl + e- ? Cl- is an example of a:

A. polymerization.
B. ionization.
C. reduction.
D. oxidation.


C. reduction.

Biology & Microbiology

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The protein produced by S. aureus that interferes with phagocytosis is

A. protein M. B. collagen. C. protein A. D. capsular protein

Biology & Microbiology

Which of the following drug(s) is(are) used to treat tuberculosis?

A. Ethambutol B. Pyrazinamide C. Isoniazid D. All of the choices are correct.

Biology & Microbiology

Although especially useful to the giraffe, the rete mirabile is similar to a countercurrent heat exchange system in other related, less evolved, mammals. Thus a mechanism for _________________ homeostasis is likely to have evolved from a mechanism previously used for __________________ homeostasis.  

A.  blood pressure; pH B.  temperature; blood pressure C.  blood pressure; temperature D.  pH; blood pressure Adult giraffes can be up to 20 ft. tall, and thus require special adaptations to maintain appropriate blood pressure. One adaptation is the rete mirabile, a group of blood vessels that form a web or net-like structure to slow blood flow.

Biology & Microbiology

One can think of F as:

a. the probability of two alleles being identical by descent. b. a measurement used to quantify the loss of variation due to drift over time. c. a measure of the degree of inbreeding. d. A and B. e. All of the above.

Biology & Microbiology