What is the most likely source of various
hangover symptoms?
a. acetate
b. acetaldehyde
c. ethanol
d. alcohol dehydrogenase
e. carbon dioxide
B
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What is the main reason for using food webs instead of food chains in analyzing ecosystems?
I) Most organisms eat more than one type of food. II) Most organisms feed at several trophic levels. III) The decomposition cycle needs to be shown. A) only I B) only II C) only III D) only I and II E) I, II, and III
Point mutations in the hemagglutination (HA) or neuraminidase (NA) genes during viral ribonucleoprotein (RNP) replication give rise to new strains. This mechanism is known as the antigenic:
a. drift. b. shift. c. re-assortment. d. modification.
Death of hair cells resulting from repeated exposure to loud noises is thought to be caused by metabolic "exhaustion" of these cells from continuous activation.
Answer the following statement true (T) or false (F)
A mutation in the MAOA gene is associated with ____ behavior
a. depressive b. risk-taking c. violent d. schizophrenic e. bipolar