Gas exchange between the air and the blood takes place in the __________
Fill in the blank(s) with the appropriate word(s).
alveoli
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Nonsteroid hormones ________ pass across the plasma membrane; they cause the target cells to ________ that produce the characteristic effects of the hormones.
A. can; synthesize specific proteins B. cannot; activate or inactivate the cellular enzymes C. can; activate or inactivate the cellular enzymes D. cannot; synthesize specific proteins
________ refers to all chemical reactions necessary to maintain life
A) Digestion B) Metabolism C) Homeostasis D) Nutrition
A patient suffers nerve damage to the sciatic nerve, requiring surgery to suture the nerve back together. After surgery, the patient reports that sensation from the lateral and medial sides of the knee seem to be reversed. How could this happen?
What will be an ideal response?
In light adaptation,
a. phototransduction does not occur in the retinal regions outside of the fovea b. rhodopsin levels decrease in rods c. the iris' circular muscle relaxes d. both a and b occur e. both b and c occur