Mechanisms for controlling enzyme activity include all of the following EXCEPT .a. covalent modification of the enzyme. b. feedback inhibition. c. degradation of the enzyme. d. addition of short sections of new amino acid sequence.

d. addition of short sections of new amino acid sequence.

Explanation:

Amino Acids don't really deal with controlling Enzymes. I hope this helps:)

they float because they are less dense than the water itself

something denser than water, like a rock, will sink to the bottom

answer: glucoamylase presented optimum activity at temperature of 55â°c, and, in the glycosidic bonds from the non-reducing ends of starch, resulting in the production of glucose. source and type of fermentation can affect the enzyme's properties

credit to kalahira