Flying insects typically _____
A) decrease metabolism as much as 200-fold during flight
B) switch from diffusion of tracheal gases to active transport during flight
C) utilize high numbers of mitochondria in flight muscles
D) generate fuel molecules from catabolism of carbon dioxide
C
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Why are rabies shots given to domestic animals yearly and not just once in the animal's lifetime?
What will be an ideal response?
What is the likely outcome if you were able to force water through fish gills in the opposite direction to how it normally flows over the gills?
A. There would be no effect, and maximal oxygenation of blood would still occur. B. The direction of blood flow would reverse through the gills to compensate for the reversed direction of water flow. C. Gas exchange would be inhibited and movement of oxygen into the blood would cease. D. The movement of carbon dioxide from the blood into the water would increase. E. The blood's oxygen concentration would not be able to exceed 50%. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about fish gills? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Gene duplications
a. have proved to be adaptive in some cases. b. have resulted in many slightly different hemoglobin molecules in primates. c. always have negative consequences. d. can occur via unequal crossovers at prophase I. e. are all of these EXCEPT “always have negative consequences.”
The material in the core of HIV (AIDS virus) is:
A) protein. B) xarbohydrate. C) RNA. D) DNA.