Which biome occurs in the interiors of continents where winters are cold and snowy and summers are warm and fairly
dry?
a. tropical montane forests
b. temperate grasslands
c. chaparral
d. dry savannas
e. temperate forests
ANSWER: b
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The structure of the sliding clamp is ____ in bacteria, archaea and eukaryotes, which likely indicates that ____
a. largely variable; the function of the sliding clamp is different in these organisms b. largely variable; the function of the sliding clamp is similar in bacteria and archaea but different in eukaryotes c. highly conserved; the sliding clamp is involved in different processes depending on the organism d. highly conserved; the function of the sliding clamp is similar in these organisms e. largely variable; the sliding clamp is not essential for DNA replication
A 20 m wide edge disrupts a smaller fraction of a small habitat patch than that of a large habitat patch
a. True b. False
Steroid hormones are derived from
a. free fatty acids. b. cortisol. c. tyrosine. d. cholesterol. e. alanine.
Which molecules pick up and transfer H+ to the electron transport chain?
a. ATP b. oxygen c. phosphate d. acetyl-CoA e. NAD and FAD