Which of the following is true of enzymes?
A) Enzyme function is increased if the 3-D structure or conformation of an enzyme is altered.
B) Enzyme function is independent of physical and chemical environmental factors such as pH and temperature.
C) Enzymes increase the rate of chemical reaction by lowering activation energy barriers.
D) Enzymes increase the rate of chemical reaction by providing activation energy to the substrate.
Answer: D
You might also like to view...
On the outer surface of the plasma membrane there are marker molecules that identify the cell type. Often these molecules are
A. ATP. B. amino acids. C. nucleotides. D. carbohydrate chains. E. inorganic ions.
The simplest entity that exhibits all of the properties of life is called a(n)
a. cell. b. molecule. c. organ. d. tissue. e. organism.
The three stress hormones are _____
a. cortisol, FSH, and LH b. epinephrine, cortisol, and FSH c. norepinephrine, cortisol, and FSH d. epinephrine, norepinephrine, and cortisol e. epinephrine, norepinephrine, and FSH
Lack of which element can lead to goiter?
a. iron b. iodine c. calcium d. zinc e. magnesium