Which of the following is not true of viruses?

A. Viruses replicate by binary fission.
B. Viruses consist of one or more molecules of DNA or RNA enclosed in a coat of protein and sometimes in other more complex layers.
C. Viruses can exist in two phases: intracellular and extracellular.
D. Viruses are acellular.


Answer: A

Biology & Microbiology

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Membrane potential will affect the directional movement of

A. Glucose (C6H12O6) B. Cholesterol C. Potassium (K+) D. Oxygen (O2)

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Which of the following molecules are biologically active?

A. L – sugars B. L – amino acids C. only amino acids that are optically inactive D. only sugars that lack chiral centers E. All of these molecules are biologically active.

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Metaphase II arrest is mediated by ________, a biochemical activity present in mature eggs.

Fill in the blank(s) with the appropriate word(s).

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Diana has been fasting for a few days and decides to go for a short run before breaking her fast. The glucose she needs for her run will come from________.

A. cellular respiration B. insulin C. glycolysis D. breaking glycogen down to small molecules E. breaking starch down to small molecules

Biology & Microbiology