Permafrost is ____
a. a temporary pool of water in an estuary
b. a permanent pool of water in the grasslands
c. permanently frozen ground in the polar icecap
d. temporary frozen ground in the polar icecap
e. permanently frozen layer of ground in the tundra
ANSWER: e
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During ____, the three germ layers rearrange to produce tissues and organs
a. organogenesis b. fertilization c. parturition d. gastrulation e. cleavage
Corn smut is a fungus that grows in the ears of corn and changes corn kernels into black, powdery balls of fungus tissue. What would you hypothesize is the significance of the relationship between corn smut and corn?
A) Corn smut has a parasitic relationship with corn so that it can use the corn as a way to spread spores. B) Corn smut has a symbiotic relationship with corn so that it can use the corn as a way to spread spores. C) Corn smut helps to decompose corn more quickly and therefore replenishes nutrients in the soil at a faster rate. D) Corn smut slows decomposition of corn and therefore reduces the rate at which nutrients are returned to the soil.
Organisms usually store food in the form of a
A. lipid. B. vitamin. C. protein. D. amino acid.
Viral nucleic acids that comprise a viral genome can be:
a. UNA only b. RNA only c. DNA or RNA d. RNA or UNA e. DNA only