Bulk flow of organic compounds is indicated by letter ____
a. A
b. B
c. C
d. D
e. E
ANSWER: d
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DNA polymerase and aminoacyl-tRNA synthase are similar in that both have proofreading ability, but differ in the substrates that they act upon.
Answer the following statement true (T) or false (F)
What is the direction of sodium ion flow through leak channels in a photoreceptor cell in the dark?
A. from the cytoplasm to the extracellular space B. from the smooth endoplasmic reticulum to the cytosol C. from the extracellular space into the cytoplasm D. from vesicles into the synapse
The sac fungi are distinguished from all other groups of fungi because their reproductive structures are ________.
A. inside an ascus B. zygospores C. motile D. borne on basidia
Birds that dive into the water from a height of 18 to 30 meters are called:
a. pelicans. b. albatross. c. tubenoses. d. boobies. e. puffins.