A viral capsid is composed of subunits called:
a. Envelopes
b. Nucleic Acids
c. RNA
d. Coats
e. Capsomeres, which are in turn made of protomers
Answer: e. Capsomeres, which are in turn made of protomers
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The density of the organisms living at great depths is about:
a. the same as the surrounding density. b. greater than the surrounding density. c. less than the surrounding density.
On a pedigree chart, what symbol would represent a son with a genetic disorder?
A. a clear circle B. a shaded circle C. a shaded square D. a clear square
Biologists use a classification system to group organisms in part because organisms
a. are going extinct b. are very numerous and diverse c. are too much alike d. share too many derived characteristics
Why are nitrogen and the nitrogen cycle important to living things?
A) The release of nitrogen during cellular respiration contributes to global warming. B) Nitrogen is an important biotic component of ecosystems. C) Nitrogen is an essential part of all organic molecules. D) The release of nitrogen from fossil fuels counteracts global warming. E) Nitrogen is an essential part of proteins, RNA, and DNA.