Which of the following ions acts as a buffer to minimize changes in intracellular pH?
A) sodium
B) chloride
C) bicarbonate
D) potassium
E) phosphate
Ans: E) phosphate
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How much water loss, at a minimum, would a 150-pound person have to undergo to become dehydrated?
A. Greater than 1.5 pounds B. Greater than 5 pounds C. Greater than 10 pounds D. Greater than 15 pounds
Which of the following is correctly matched?
A. Mucosa - controls peristalsis B. Submucosa - lamina propria C. Muscularis - responsible for peristalsis D. Serosa - increased surface area E. Serosa - contains an extensive supply of nerves and blood vessels
The enzyme catalyzing the hydrolysis of triglycerides is ________.
A. lactase B. trypsin C. maltase D. lipase
The most likely outcome of nondisjunction is the production of a gamete receiving ________.
A. 46 chromosomes B. 22 chromosomes C. 44 chromosomes D. no chromosomes E. 23 chromosomes