Trace fossils include all of the following except:

A. the mineralized skull of an ancient
mammal.
B. the trail left by a crawling worm.
C. the impression of a bird feather.
D. a dinosaur footprint.
E. the burrow of an extinct crab.


A

Biology & Microbiology

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Once they have been processed through the citric acid cycle, the acetyl-CoA molecules from a single glucose molecule will produce:

A. 2 ATP, 6 NADH, 4 CO2. B. 6 NADH, 6 GTP. C. 6 FADH2, 2 ATP, 6 CO2. D. 6 GTP, 6 FADH2. E. 4 CO2, 6 FADH2, 2 ATP.

Biology & Microbiology

Which level of organization is required for all others to form?

A. cell B. tissue C. organ D. organism E. population

Biology & Microbiology

The first plant to colonize the plains of Mt St

Helens after this volcano erupted in 1980 was a prairie lupine. The prairie lupine is an example of

a. a secondary successor. b. a pioneer species. c. a keystone species. d. an exotic species. e. more than one of these.

Biology & Microbiology

Which of the following is a nonrenewable resource?

a. copper and gold b. fresh water c. forests d. grasslands e. fish

Biology & Microbiology