The membrane component(s) primarily responsible for the structure and function of plasma membranes is/are
A. nucleic acids.
B. glycolipids.
C. phospholipids.
D. cholesterol.
E. glycosylated proteins.
Answer: C
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A protein is tightly associated with the plasma membrane and it can be isolated by treating the membrane with a strong detergent. What type of membrane protein is this?
A. A peripheral membrane protein B. An integral membrane protein C. Either an integral or a peripheral membrane protein D. Neither an integral nor a peripheral membrane protein
Fossil fuels are primarily the result of
a. animal bones. b. animal wastes. c. decaying plants. d. worn-away rocks
Botulism and tetanus have the ability to interfere with neuromuscular functions. The toxins they produce are classified as:
a. endotoxins. b. enterotoxins. c. exotoxins. d. emetic toxins.
Statistical analysis of genetic variation within and among human populations—including those we identify as different races—reveal:
A. more genetic variation between groups than we see within groups. B. more genetic variation within groups than we see between groups. C. no clear pattern of genetic variationâ€"in some regions, we would see more variation within than among groups, and in some regions we would see the opposite. D. a correlation between the amount of genetic variation between groups and the length of time the groups have been isolated from one another. E. None of the above.