Which of the following metabolic reactions occurs when a cell uses energy?
a. ATP gains a phosphate group and becomes ADP
b. ADP gains a phosphate group and becomes ATP
c. ATP releases a phosphate group and becomes ADP
d. ADP releases a phosphate group and becomes ATP
Question 2
An enzyme that includes zinc or copper as an integral part of its structure is classified as a(n)
a. metalloenzyme. b. oxidoreductase.
c. cytochromidase. d. metallothionase.