How does fitness relate to family size?
What will be an ideal response?
It depends on the ability of the children themselves to have children. Greater fitness is associated with larger families only if all or most of the progeny live to be reproductively successful. Survival is not enough.
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Rubisco has 16 subunits joined together to make a functional unit. Eight of the subunits are large, the other 8 are
small. What is the function of the small subunits?
a. The small subunits contain the reactant binding sites. b. They stabilize the overall enzyme's structure but have no intrinsic function. c. The function of the small subunits is still unknown. d. They regulate the enzyme's rate of catalysis. e. The small subunits contain allosteric regulator binding sites.
Once the stored ATP is consumed, what
substance will muscles turn to for energy?
a. glucose b. lactate c. sugar d. creatine phosphate e. myoglobin
A patient who has had a severe hemorrhage accidentally receives a large transfusion of distilled water
directly into a major blood vessel. You would expect this mistake to: a. have no unfavorable effect as long as the water is free of bacteria. b. have serious, perhaps fatal consequences because there would be too much fluid to pump. c. have serious, perhaps fatal consequences because the red blood cells could shrink. d. have serious, perhaps fatal consequences because the red blood cells could swell and burst. e. have no serious effect because the kidney could quickly eliminate excess water.
Which of the following functions like a fence to block membrane protein movement between the apical and basolateral regions of an intestinal epithelial cell plasma membrane?
A) gap junctions B) desmosomes C) adherens junction D) hemidesmosomes E) tight junction