Earth is tilted about how many degrees on its axis?
a. 8
b. 15
c. 23
d. 30
e. 38
ANSWER: c
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The term “hyperpolarization” refers to
a. movement of the resting membrane potential closer to threshold. b. movement of the resting membrane potential farther from the threshold c. an excitatory postsynaptic potential. d. the opening of sodium channels.
Each photosystem in a eukaryotic plant __________
a. is composed of molecules of chlorophylls and carotenoids. b. possesses a light-gathering antenna complex c. has a specialized chlorophyll a molecule in its reaction center d. a)., b). and c). are all true. e. a)., b). and c). are all true, but only for Photosystem II.
Cancer cells
1.have control of cell division. 2.are in G0 3.have a number of mutated genes that promote cell division. 4.are in G1 5.never replicate their DNA.
Polygyny is more likely to occur as differences in territory quality increase between territorial males
Indicate whether the statement is true or false