All of the following are composed primarily of proteins EXCEPT
a. enzymes.
b. cytoskeleton.
c. antibodies.
d. DNA.
D
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Which general organic compound forms ringed carbon structures?
a. Aromatic hydrocarbons b. Chlorofluorocarbons c. Aliphatic hydrocarbons d. Hydrostatic hydrocarbons
The larger the initial size of a population, the faster it can reach K
a. true b. false
A predator-prey relationship, such as between roadrunners and lizards
a) is usually a cause of extinction of one of the species b) leads to related increases and decreases in the populations of both species c) represents competition between species d) contributes to exponential growth of the predator species
Which type of cell is severely depressed in AIDS patients?
A. helper T-cells B. suppressor T-cells C. plasma cells D. cytotoxic T-cells E. B-cells