An antibody consists of how many polypeptides?
A. Four
B. Five
C. Two
D. Eight
E. Six
Answer: A
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does all of the following EXCEPT a. is thin. b. is moist. c. is permeable to gases. d. separates partial pressure gradients of O2 and of CO2. e. all of these.
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A) mitochondria B) chloroplasts C) cytoplasm D) ribosomes
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