Which of the following chemical substances contributes to the unique characteristics of acid-fast bacteria?
A) N-acetylglucosamine
B) peptidoglycan
C) lipoteichoic acid
D) endotoxin
E) mycolic acid
E
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The process of evolutionary changes that result in formation of new species and groups of species is called
A. temporal evolution. B. artificial selection. C. macroevolution. D. serial evolution. E. a combination of temporal and serial evolution.
In the amniote egg diagram shown, the item labeled "3" is the
a. yolk sac. b. chorion. c. allantois. d. amnion. e. albumin.
The diagram series above indicates
a. a large amount of yolk in the egg. b. this looks like chicken egg division. c. a small amount of yolk in the egg. d. an advanced method of cell division. e. all of these.
What structures would neurobiologists look for if they are interested in determining if an animal can see in color?
A) opsins B) electroreceptors C) pupil D) lens