When the pH of body fluids begins to fall, proteins will
A) release a hydrogen from the amino group.
B) bind a hydrogen at the amino group.
C) release a hydrogen from the carboxyl group.
D) bind a hydrogen at the carboxyl group.
E) cause none of these actions.
B) bind a hydrogen at the amino group.
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The erythrocyte count increases after a while when an individual goes from a low to a high altitude because the ________.
A) temperature is lower at higher altitudes B) basal metabolic rate is higher at high altitudes C) concentration of oxygen and/or total atmospheric pressure is higher at higher altitudes D) concentration of oxygen and/or total atmospheric pressure is lower at high altitudes
Answer the following statements true (T) or false (F)
1. Sebaceous glands produce an oil for skin called sebum 2. Apocrine glands are distributed over almost the entire body surface. 3. Eccrine glands produce a watery liquid. 4. Apocrine glands produce a thicker liquid than do eccrine glands. 5. Eccrine glands are concentrated in the axillae and the genital area.
Temporomandibular joint (TMJ) syndrome causes
A) ringing in the ears. B) all of the above. C) clicking sound from the jaw. D) headache.
Which of the following changes have the potential to dramatically affect the potential difference across the plasma membrane?
A. Increased permeability of the membrane to Na+, increased intracellular concentration of K+, and any change in the rate at which the sodium-potassium pump works B. Any change in the rate at which the sodium-potassium pump works C. Increased permeability of the membrane to Na+ D. Increased intracellular concentration of K+ E. Increased permeability of the membrane to Na+ and increased intracellular concentration of K+