Which of the following is most likely to happen to a group of students who relax by drinking a pitcher of their favorite beverage?
A. an increase in urine volume
B. an increase in urine osmolality
C. an increase in ADH production
D. increased aldosterone secretion
E. a decrease in urine volume
A
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The expensive tissue hypothesis includes the argument that
a. evolution occurs in the face of cost-benefits trade-offs. b. maintaining the membrane potential consumes much energy. c. there is a corresponding decrease in the size of the digestive tract that parallels the increase in brain size. d. large brain sizes require high quality diets to support them, and high quality diets yield nutrients easily and adequately to smaller digestive tracts. e. all of these.
Which method of regenerating ATP during muscle contraction can produce lactic acid?
A) aerobic cellular respiration B) oxidative phosphorylation C) direct phosphorylation D) creatine phosphate E) anaerobic glycolysis
A gene for a certain protein contains 300 nucleotides. How many amino acids will ultimately make up the protein molecule?
A) 900 B) 1200 C) 300 D) 100
Blood supply to the pancreas is essential because the organ is the production site for important hormones used in glucose metabolism. Which of the following arteries does NOT supply the pancreas?
a. superior mesenteric artery b. left gastric artery c. splenic artery d. common hepatic artery