Which of the following is NOT one of the four steps involved in phagocytosis?
A) exocytosis
B) attachment
C) internalization
D) interleukin release
E) degradation
Answer: D) interleukin release
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The tracheae of adult terrestrial insects have been a factor in the great abundance of insects because they serve the same function in terms of the delivery of respiratory gases to the cells as do
A. the gills of aquatic insects. B. the lungs of mammals. C. the book lungs of spiders. D. the closed circulatory system of cephalopods. E. the Malpighian tubules of spiders.
Maintenance of the uterine lining during pregnancy in mammals requires
A. estradiol. B. testosterone. C. FSH. D. LH. E. progesterone.
Increased atmospheric CO2 concentrations might have what effect on seawater?
A) Seawater will become more alkaline, and carbonate concentrations will decrease. B) There will be no change in the pH of seawater, because carbonate will turn to bicarbonate. C) Seawater will become more acidic, and carbonate concentrations will decrease. D) Seawater will become more acidic, and carbonate concentrations will increase.
Anury is the absence or abbreviation of the tail in animals, including sheep. It is inherited in an autosomal dominant fashion. A ram with anury is mated to a ewe with a normal tail. The ram's father had anury, his mother did not. What is the probability that the ram and ewe will produce a lamb with anury? (ram = male; ewe = female)
A. No chance B. 75% C. 25% D. 100% E. 50%