In an experiment to test the effect of temperature on the rate of bacterial reproduction, temperature would be the
A. standardized variable.
B. independent variable.
C. dependent variable.
D. control variable.
Ans: B. independent variable.
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An important intestinal pathogen generally acquired from contaminated food or water is
A) Clostridium perfringens. B) Mycobacterium tuberculosis. C) Ebola virus. D) Escherichia coli O157:H7.
The stage of viral replication in which the virus binds a cell surface receptor is:
a. Release b. Penetration c. Synthesis d. Attachment e. Assembly
You are seeking a new anti-inflammatory drug to inhibit local responses to stress and injury. Which of the following activities would you look for in a potential anti-inflammatory agent?
A) stimulates release of prostaglandins B) blocks adenylate cyclase activity C) blocks an enzyme associated with arachidonic acid production D) stimulates the activation of platelets E) increases estrogen secretion
FADH2 is an example of a(n)
A) protein. B) enzyme-substrate complex. C) active site. D) enzyme. E) electron carrier molecule.