In eared seals, the main propulsive force for swimming is produced by the:
a. forelimbs.
b. hindlimbs.
c. undulations of the body.
d. tail.
e. caudal fin.
A
Biology & Microbiology
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Which of the following are produced by roots in order to increase surface area, allowing for greater access to nutrients in the soil?
A. root hairs B. root nodules C. root parenchyma D. root Casparian strips
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Prokaryotic cells divide by a process known as
A. conjugation. B. mitosis. C. binary fusion. D. binary fission.
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Which of the following is a change to the nucleotides in a segment of DNA that codes for a protein?
a. Proto-oncogenes b. Tumor suppressor genes c. Gene mutations d. Negative regulators
Biology & Microbiology
The epidermis consists of
A. collagen fibers. B. elastic fibers. C. adipose tissue. D. stratified squamous epithelial cells.
Biology & Microbiology