An enzyme may lose its ability to function because of
a. excessively high temperatures.
b. a change in its three-dimensional structure.
c. a large change in the pH of the environment.
d. all of the above.
d
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A research made an interesting observation about a protein made by the rough ER and eventually found in a cell's plasma membrane. The protein in the plasma membrane was actually slightly different from the protein made in the ER. The protein was probably altered in the _____.
Fill in the blank(s) with the appropriate word(s).
Guttation results from:a
water pressure. b. transpiration pull. c. osmotic pressure. d. root pressure. e. sink-to-source transport
The formation of sodium chloride (NaCl) is the result of
A) covalent bonding. B) chemical unreactivity. C) repelling between the same charges. D) attraction between opposite charges.
Unlike other cervical vertebrae, the atlas and axis have no intervertebral discs between them.
Answer the following statement(s) true (T) or false (F)