An example of a neurotransmitter that works by activation of G proteins is:
a. acetylcholine.
b. nitrous oxide.
c. endorphins.
d. GABA.
e. serotonin.
E
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The idea that evolution proceeds with long periods of stasis with relatively brief bursts of fast evolutionary change is called
A. catastrophism. B. temporal equilibrium. C. gradualism. D. punctuated equilibrium. E. temporal isolation.
What marine biology laboratory inspired other facilities of the same kind?
a. Marine Biological Laboratory at Woods Hole b. Friday Harbor Laboratories of the University of Washington c. Museum of Comparative Zoology at Harvard University d. Scripps Institute of Oceanography in California
All of the following statements are true
concerning phloem tissue EXCEPT that a. it transports plant-manufactured products. b. it stores organic compounds. c. it is composed of living cells. d. only some of its cells have nuclei. e. it does not transport minerals
Suppose that an infectious agent, such as a virus or bacterium, had surface antigens identical to those displayed on the
surface of human cells. Would the immune system be able to detect and destroy these agents? Why or why not? What will be an ideal response?