Which of the following statements about the speed of impulse conduction in a neuron is true?
a. Longer axons can transmit impulses faster than shorter ones.
b. Unmyelinated axons transmit impulses faster than myelinated ones.
c. Shorter axons can transmit impulses faster than longer ones.
d. Nerve impulses travel faster than the speed of light.
e. Unmyelinated axons with larger diameters transmit impulses faster than ones with small
diameters
E
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Schizophrenia differs from dementia in that it
A) is a single-gene disorder. B) is treatable with insulin. C) is episodic rather than degenerative. D) is degenerative rather than episodic.
For a glucose molecule which is completely
oxidized during the process of cellular respiration, what is the correct sequence of series of reactions? I. glycolysis II. phosphorylation III. Krebs cycle
a. I >>> II >>> III b. I >>> III >>> II c. II >>> I >>> III d. II >>> III >>> I e. III >>> I >>> II
Describe the movement of oxygen and carbon dioxide during gas exchange.
A. Oxygen diffuses out of the lungs into red blood cells and carbon dioxide diffuses out of red blood cells into the kidney nephrons. B. Carbon dioxide diffuses out of the lungs into red blood cells and oxygen diffuses out of red blood cells and into the lungs. C. Oxygen diffuses out of the lungs into red blood cells and carbon dioxide diffuses out of red blood cells and into the lungs.
Surface area in many kinds of organs is important because the amount of surface determines
A. how much material can pass through the membrane. B. which kinds of materials can pass through the membrane. C. when materials can pass through the membrane. D. where materials can pass through the membrane.