Channels
A) attach the plasma membrane to other structures in the cell.
B) are detected by immune cells.
C) have enzymatic functions.
D) transport solutes across plasma membrane.
E) permit the passage of water and small solutes.
Answer: E
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Indicate whether the statement is true or false
_____ occurs when the inside of the plasma membrane becomes more negative, and ______ occurs when the inside of the plasma membrane becomes less negative.
a. Depolarization, repolarization b. Depolarization, hyperpolarization c. Hyperpolarization, depolarization
The partial pressure gradient for oxygen in the body is much steeper than that for carbon dioxide. Explain how equal amounts of these two gases can be exchanged (in a given time interval) in the lungs and at the tissues. What law describes this
phenomenon? What will be an ideal response?
Identify structure "C" on the bottom diagram
A. autonomic ganglion B. somatic motor neuron C. effector organ (smooth muscle of GI tract) D. postganglionic neuron E. preganglionic neuron