A definitive host harbors which stage of a parasite?
A) miracidium
B) cyst
C) adult
D) larva
E) All of the answers are correct.
C
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Which of the following might affect the foraging behavior of an animal in the context of optimal foraging?
I) risk of predation II) prey size III) prey defenses IV) prey density A) only I and III B) only II and IV C) only II, III, and IV D) only I, II, and III E) I, II, III, and IV
During the DNA replication process, which of the following organisms would have the fewest origins of replication per cell?
A. a rapidly dividing Streptococcus bacterium B. a yeast cell C. a human D. a young oak tree E. a fruit fly
The hormone that stimulates liver cells to release stored glucose is
A. insulin. B. calcitonin. C. aldosterone. D. glucagon. E. melatonin.
When you are breathing normally, exhalation results mainly from
A) the contraction of muscles in the chest. B) the contraction of the diaphragm. C) the relaxation of the diaphragm and muscles between the ribs. D) low pressure in the lungs.