Viruses:
a. Consist of only a single cell
b. Are smaller than cells
c. Consist of multiple cells
d. Contain a nucleus
e. Contain ribosomes
Ans: b. Are smaller than cells
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Populations in which individuals repel each other because resources are in short supply tend to have ____ dispersion
a. random b. clumped c. uniform d. dynamic e. unpredictable
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
Which of the following enzymes joins DNA strands, joins Okazaki fragments, and mends gaps in the DNA backbone during excision repair?
A. RNA polymerase B. DNA polymerase C. DNA ligase D. DNA gyrase
The ________ are the macrophages of the central nervous system.
Fill in the blank(s) with the appropriate word(s).