How many proteins are specified in the genetic code?
a. 4
b. 5
c. 20
d. 64
Ans: c. 20
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X-ray crystallography was used to determine the structure of:
A. cholesterol. B. vitamin B12. C. myoglobin. D. insulin. E. All of these choices are correct.
Which of the following pertains to Borrelia burgdorferi?
A. Coccus B. Bacillus C. Spirochete D. Filament
Rhinovirus is an RNA virus that causes the common cold and sinus infections. The virus does not contain an envelope. Which of the following is true of a rhinovirus?
A. It does not contain genetic material. B. It does not contain protein. C. It does not contain lipid. D. It does not contain protein or genetic material. E. It does not contain lipid or protein.
Which of the following terms is associated with polychaetes?
A. radula B. metamorphosis C. parapodia D. mantle E. visceral mass