Which animals are radially symmetrical?
a. annelids
b. arthropods
c. cnidarians
d. roundworms
e. flatworms
ANSWER: c
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The phospholipids of plasma membranes contain _____
a. a hydrophobic head and a hydrophilic tail b. two hydrophobic heads and a hydrophilic tail c. a hydrophobic head and two hydrophobic tails d. a hydrophilic head and two hydrophobic tails e. a hydrophilic head and two hydrophilic tails
The total yield of ATP from one molecule of glucose is
a. 2. b. 8. c. 32. d. 36. e. 48.
Rhizobia, actinomycetes, and cyanobacteria all share the common feature that they can _____
A) increase water uptake in plants B) kill parasites in the soil C) exist in extreme environments D) fix atmospheric nitrogen
There is a large amount of scientific evidence to support the notion that nutritional ergogenic aids will promote an improvement in physical fitness.
a. true b. false