The guard cells surrounding a stomata respond to changes in the environment, such as

a. humidity.
b. light.
c. wind.
d. all of these


D

Biology & Microbiology

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If a plant species with 2n = 14 forms an allopolyploid with a plant species with 2n = 18, what would be the likely diploid (2n) number of the allopolyploid?

A) 16 B) 28 C) 32 D) 36

Biology & Microbiology

Anaerobic metabolism produces

a. large amounts of energy. b. small amounts of energy. c. the same amount of energy as aerobic metabolism. d. no energy.

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Which is NOT part of the nitrogen cycle?

a. denitrification b. deammonification c. nitrogen fixation d. ammonification e. uptake by autotrophs

Biology & Microbiology

Most of the enzymes are proteins.

a. true b. false

Biology & Microbiology