9. Base your answer to the question on the information and graph below and on your knowledge of biology. Which enzyme functions best in a pH environment
most similar to that of human stomach enzymes?
The pH of the internal environment of lysosomes (organelles that contain digestive
enzymes) is approximately 4.5, while the pH of the surrounding cytoplasm is
approximately 7. The average pH of the human stomach during digestion is
approximately 2.5, while the average pH of the small intestine during digestion is
about 8.
The graph below shows how pH affects the enzyme activity of four different enzymes,
A, B, C and D
The Effect of pH on Enzyme Activity
Relative Rate of
Enzyme Activity
Acid
7
Base
14
PH
AA
ООО