Water moves up the xylem as a result of
1) Surface tension
2) Gravity
3) The polarity of water
4) Both A and C
Both A and C
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Which of the following is true concerning the pathogen that causes tetanus?
a. The bacteria are airborne. b. The bacteria are spread by respiration. c. The pathogen is a virus. d. The bacteria tend to colonize wounds. e. The toxin produced by the pathogen prevents muscle contraction.
In a nerve cell, the function of the dendrites is to:
a. conduct impulses away from the cell body. b. attach the neuron to connective tissue. c. receive impulses and conduct them to the cell body. d. increase the speed at which nerve impulses are carried away from the cell body. e. support and nourish the neuron.
Eukaryotes that are not plants, animals, or fungi are classified as ________
Fill in the blank(s) with correct word
Very often, the addition of a(n) ______ by a kinase will serve to activate an enzyme.
a. substrate b. gene c. amino acid d. phosphate group