Which one of the following statements about neurons is FALSE?
A. Most neurons are unipolar.
B. Neurons have very high energy needs.
C. Most neurons are association neurons.
D. Some neurons are some of the longest cells in the body.
E. Neurons may receive input from thousands of other neurons.
Answer: A. Most neurons are unipolar.
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A. 1. B. 2. C. 3. D. 5.
There are two solutions separated by a semipermeable membrane. Solution a is 0.3 M glucose, and solution b is 0.15 M NaCl. Will there be a net flow of water across this membrane? Why or why not?
What will be an ideal response?
Alzheimer's disease is thought to involve primarily
A. loss of neurons that secrete or respond to dopamine. B. tumors that produce excess serotonin. C. loss of neurons that secrete or respond to catecholamines. D. loss of cholinergic neurons. E. loss of adrenergic neurons.
During excitation-contraction coupling,
a. the action potential travels down the transverse tubules. b. Ca2+ is released from the sarcoplasmic reticulum. c. Ca2+ is taken up by the sarcoplasmic reticulum. d. both (a) and (b) above are correct. e. all of these answers.