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.
Answer: D
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A. codons. B. nucleotides. C. proteins. D. histones. E. complementary bases.
Insulin ________ blood glucose, whereas glucagon ________ blood glucose
A) makes; destroys B) does not affect; controls C) controls; does not affect D) decreases; increases E) increases; decreases
The early primates were specialized for life in the ________
Fill in the blank(s) with correct word
As humans age, we tend to see a decrease in the function of various body systems. A decrease in which system will lead to problems in regulating body temperature?
A. digestive system B. integumentary system C. excretory system D. respiratory system E. cardiovascular system