A protein that spans the cell membrane is termed a(n)
A) integral protein. B) peripheral protein.
C) anchoring protein. D) receptor protein.
A
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Which of the following hormones directly stimulates growth of muscle tissue, leading to increased muscle mass?
A) epinephrine B) thyroid hormone C) testosterone D) parathyroid hormone E) calcitonin
Placing pure water around cells causes the cells to swell because the cytosol has a lower osmotic pressure than the pure water
Indicate whether the statement is true or false
If one nerve stimulus arrives at a muscle fiber so soon that the fiber does NOT relax at all from the previous twitch, the most likely result will be ________. This can only be achieved in the laboratory.
A. complete tetanus B. incomplete tetanus C. wave summation D. spasm E. fatigue
Some people purchase melatonin as an over-the-counter medication. For what specific purpose?
A) growth of hair and nails B) calcium supplement C) increase metabolism D) sleep aid E) blood glucose regulation