Which of the following is not a function of epithelial tissue?
A. Selective permeability
B. Sensation
C. Physical protection
D. Secretion
E. No exceptions; these are all functions of epithelial tissue.
Answer: E
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The average life span of a red blood cell is
A) 6 months. B) 1 year. C) 1 week. D) 4 months. E) 1 month.
Which value related to semen production is correct?
a. average volume ejaculated is 1 ml b. total sperm count averages about 100 million c. maximal sperm count is about 400 million d. semen contains only sperm e. none of the above
Heart tissue is nourished by
the SA node. the blood passing through the chambers of the heart. the chordae tendineae. blood in the coronary blood vessels (i.e., through the coronary arteries to capillaries).
In order to increase the overall rate of a metabolic pathway consisting of five reactions catalyzed by five different enzymes, which must occur?
A. increasing the reaction rate of all five enzymes B. increasing the reaction rate of the fastest enzyme C. increasing the reaction rate of the slowest enzyme D. increasing the reaction rate of the first enzyme in the pathway E. increasing the reaction rate of the last enzyme in the pathway