One reason angiosperms are more successful
than gymnosperms is because gymnosperms
lack ___.
a. seeds
b. megaspores
c. fruits
d. true leaves
e. wood
C
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Do males possess an organ that is analogous to the uterus in females?
A. Yes B. No
A "5? cap":
a. prevents translation. b. prevents the binding of ribosomes. c. marks the mRNA for degradation. d. is added to mRNA but not pre-mRNA. e. protects mRNA from degradation.
Which of the following chemical substances contributes to the unique characteristics of acid-fast bacteria?
A) N-acetylglucosamine B) peptidoglycan C) lipoteichoic acid D) endotoxin E) mycolic acid
What is the function of the cellular structure indicated by "c" in Figure 3.2?
A. provide shape only B. attach to surfaces only C. protect from dehydration only D. attach to surfaces and protect from dehydration E. serve as carbohydrate storage