Traveling to a high altitude can result in “altitude sickness;” however, the body eventually adjusts through ____
a. increased hemoglobin circulation
b. decreased erythrocyte production
c. increased secretion of erythropoietin
d. decreased hemoglobin circulation
e. decreased secretion of erythropoietin
ANSWER: c
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You are examining an organism recently found on Mars and are currently trying to identify one of its neurotransmitters. Biochemical characterization indicates that it is a derivative of the amino acid tyrosine,
so you classify the novel neurotransmitter as a(n) A) acetylcholine analogue. B) catecholamine. C) neuropeptide. D) serotonin analogue. E) GABA analogue.
Osmoconformers would most likely be found in:
a. estuaries. b. coastal zones that receive freshwater. c. freshwater. d. terrestrial habitats. e. open ocean waters.
Human genetic diseases such a Cri-du-chat, Angelman syndrome and Prader-Willi syndrome are the result of which type of chromosomal change?
A. Translocations B. Duplications C. Deletions D. Inversions
Why are archaea and bacteria—both collections of prokaryotic organisms—grouped into different domains while organisms like fungi and animals are in the same domain?
a. Bacteria and archaea differ significantly in their intracellular organization and structure, but fungi and animals have similar intracellular structure. b. The DNA sequences of bacteria and archaea are more different than animals and fungi. c. Fungi and animals look much more similar than bacteria and archaea. d. Bacteria and archaea differ significantly in their rRNA sequences, but fungi and animals share some rRNA characteristics.