Immediately outside the pulp cavity of a tooth is the:a
enamel.
b. dentin.
c. cementum.
d. spongy bone.
e. nerve.
B
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If the activity of the sodium-potassium pump was completely stopped, what would happen to the neuron's membrane potential?
A) immediate loss of resting potential B) immediate loss of action potentials C) slow decrease of resting potential D) no effect
Telomerase activity in stem cells is very low
A. true B. false
Which scientist(s) discovered the basis for the
base-pair rule, which stated that the amounts of adenine in all DNA are the same, as are the amounts of cytosine and guanine?
a. Watson and Crick b. Beadles c. Chargaff d. Franklin e. Pauling
Before messenger RNA is mature,
a. all exons are deleted and removed. b. a cap and a tail are provided. c. anticodons are assembled. d. the transfer RNA transfers the messenger RNA to the ribosome. e. the single RNA strand duplicates itself in much the same way as DNA