When a cone cell is stimulated by light, what will occur at the cell membrane?
A. Inhibition
B. Hyperpolarization
C. An action potential
D. Depolarization
E. Excitation
Answer: B
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The fifth, most recent, and still evolving phase in the 200+-year history of our current technology system is characterized by ________ energy/power
A) solar B) nuclear C) coal D) oil and gas E) water
A sponge body type consisting of one spongocoel having many folds is called:
a. asconoid. b. syconoid. c. leuconoid. d. hexactinellida. e. demospongoid.
Which of the following is a difference between
ferns and seed producing vascular plants?
a. ferns release their spores; vascular plants do not b. vascular plants have xylem; ferns do not c. vascular plants have phloem; ferns do not d. vascular plants produce embryos; ferns do not e. vascular plants have roots; ferns do not
All of the following can lead to a positive tuberculin skin test EXCEPT
A) vaccination. B) current tuberculosis infection. C) previous tuberculosis infection. D) immunity to tuberculosis. E) being near someone with tuberculosis.