An example of a nonbiological factor that affects community structure is ____
a. mutualism
b. competition
c. parasitism
d. predation
e. rainfall
ANSWER: e
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Cadherins are transmembrane proteins that function in:
A. initiating differentiation of different cell types. B. oxygen transport. C. cell-cell adhesion. D. transport processes.
You breed a black, long-haired rabbit with a white, short-haired rabbit. All of the offspring have long, black hair. If the genes for hair color and length are linked, what would be a possible ratio for the F2 population?
A. 5 long-haired black, 4 short-haired white, 1 short-haired black, 2 long-haired white B. 3 long-haired black, 1 short-haired white, 1 short-haired black, 3 long-haired white C. 5 long-haired black, 4 short-haired white, 5 short-haired black, 4 long-haired white D. 1 long-haired black, 1 short-haired white, 1 short-haired black, 1 long-haired white E. 1 long-haired black, 2 short-haired white, 5 short-haired black, 4 long-haired white
Which connective tissue is best at withstanding compression due the elasticity of its matrix?
a. loose connective tissue b. bone tissue c. cartilage d. fibrous connective tissue e. dense connective tissue
In a muscle organ like the biceps muscle,
A. the entire muscle is stimulated at the same time. B. several nerve fibers enter the muscle and each stimulates specific muscle cells. C. several nerve fibers enter the muscle, but each fiber stimulates most of the cells in the muscle. D. there are two or three motor units.