Collagen
A. forms junctions between cells.
B. is part of a cell wall.
C. must be secreted from a cell.
D. functions inside a cell.
E. acts as an enzyme.
Answer: C
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A hypothetical endangered species of wildflower has been reduced to a single small population in a mountain meadow. A rare early spring blizzard kills all but 3 of the remaining plants, one of which has a rare mutation. This is an example of:
A. natural selection. B. sexual selection. C. genetic drift/bottleneck. D. genetic drift/founder event. E. None of the answer options are correct.
Which of the following organisms do NOT
reproduce cells by mitosis?
a. plants b. fungi c. animals d. archaea e. plants and fungi
The structural level of a protein that is LEAST affected by a disruption in hydrogen bonding is the
A. primary level B. tertiary level C. quaternary level D. secondary level
Autoimmune disorders are diagnosed using
A) detection of autoantibodies. B) blood tests. C) family history. D) metabolic factors. E) a collection of tests and careful assessment of signs and symptoms.