In some plants, companion cells become modified into phloem cells that facilitate the short-distance transport of
various organic solutes from the symplast into the apoplast.
a. True
b. False
ANSWER: False
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An ________ of a nerve cell is the temporary depolarization and repolarization of the cell membrane.
Fill in the blank(s) with the appropriate word(s).
Graft-versus-host disease is primarily a
A. type I reaction. B. type II reaction. C. type III reaction. D. type IV reaction. E. type V reaction.
What type of wetlands would be found adjacent to the Missouri River?
A) fringe wetlands B) mires C) bogs D) bottomlands
The formation of complex molecules that form life is made possible by what understanding regarding carbon?
A. Carbon can form a maximum of 6 covalent bonds. B. Carbon forms up to 4 covalent bonds. C. Carbon forms 2 covalent bonds. D. Carbon forms an ions and cations. E. Carbon forms a maximum of 8 covalent bonds.