One of the most important buffer pairs in blood is carbonic acid and bicarbonate because they regulate the pH of blood by absorbing and releasing hydrogen ions as needed
Indicate whether the statement is true or false
TRUE
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Tryptophan must be ______ when tryptophan repressor molecules are inactive.
A. Present B. Absent
All mature polypeptides contain a methionine at the N-terminus
Indicate whether the statement is true or false
What type of thinking is required?
What will be an ideal response?
In cells that are constantly involved in secretion, an equivalent amount of membrane must be returned
to the interior of the cell for each vesicle that fuses with the plasma membrane; if this does not occur, then what would happen? a. The ratio of cell surface would decrease, compared to cell volume. b. The cell surface would shrivel. c. The surface area would remain constant. d. The number of membrane receptor proteins would decrease. e. The cell surface will keep expand