The two major factors that contribute to the weathering of rock are climate and:a
inorganic minerals.
b. atmospheric carbon dioxide.
c. organisms.
d. aeration.
e. atmospheric oxygen..
c
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A ________ is a polysaccharide layer that lies outside the cell wall and is not easily removed.
Fill in the blank(s) with the appropriate word(s).
The recognition site for a restriction enzyme is 5? ACC^GGT 3?. The ^ symbol indicates the site of cleavage. After digestion of DNA with this restriction enzyme, how will the ends of the resulting DNA fragments look?
A) They will have sticky, single-stranded ends with 5? overhangs. B) They will have sticky, single-stranded ends with 3? overhangs. C) They will have blunt ends. D) They will have sticky, double-stranded ends. E) The result cannot be predicted using only this information.
What would the result be if histamine and nitric oxide were NOT secreted during a puncture injury?
A. The blood vessels would be more permeable. B. The blood vessels would dilate. C. Healing would not take place at all. D. The blood mast cells would constrict. E. Healing would be slower.
MPN testing detects coliforms by
a) presumptive tests b) confirmatory tests c) completed tests d) all of the above