In CAM plants, such as cacti, stomata are
a. open during the night and closed during the day.
b. nearly always open.
c. closed only when guard cells are not exposed to sunlight.
d. almost never open.
e. open during the day and closed during the night.
A
You might also like to view...
The frozen contraction of muscle cells called rigor mortis occurs after death because ____
a. ions are not available in the cytoplasm of muscle cells b. tropomyosin breaks down quickly c. crossbriges become very rigid structures d. ATP production stops e. muscle cells are flooded with neurotransmitters
Bone tissue is hard because its matrix contains
a. collagen. b. iron. c. several minerals. d. calcium salts. e. elastic fibers
Anabolic pathways _____
A) are usually highly spontaneous chemical reactions B) consume energy to build up polymers from monomers C) release energy as they degrade polymers to monomers D) consume energy to decrease the entropy of the organism and its environment
What are the two major components of the tobacco mosaic virus?
A) RNA and DNA B) DNA and protein C) lipids and nucleic acids D) carbohydrates and nucleic acids E) RNA and protein