A twitch is contraction and relaxation of
A. one neuron.
B. one muscle cell.
C. an entire muscle.
D. one sarcomere.
E. several muscles.
B. one muscle cell.
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A mushroom belongs to which kingdom ?
a. Protist b. Fungi c. Plant d. Animal
Some drugs modulate the activity of ion channels. For example, Novocain somewhat inhibits the opening of sodium channels. What happens to the threshold of a sensory neuron if this drug is used?
A) It will take less stimulation to reach threshold. B) The nerve will not function and will die off. C) Threshold will not change. D) It will take more stimulation to reach threshold.
Anatomical features that are fully developed and functional in one group of organisms but reduced and functionless in a similar group are termed
What will be an ideal response?
Translation of mRNA into protein always starts at:
A) an AUG codon. B) the first anticodon on the mRNA. C) the E site. D) the A site. E) a termination codon.