Question

1) How does our body control activation/ deactivation of some digestive enzymes?

Select one:

a. Changing the body temperature

b. pH

c. Changing the shape of the protein

d. feedback inhibition

e. None of the above

Answer 1

CORRECT OPTION IS B

It is by ph in which our body changes the protein function

lets take it by these example -

the pepsin remains in inactive stage in the body in the form of pepsionogen secreted by gastric chief cells, when they reach the stocmach, they remain inactive and gets in the active form only and only when there is presence of acid, which is provided by hydrochloric acid secreted by parietal cell, here we can clearly sees that, there is a change in the medium,

same , when the food from the stomach reaches the small intestine , it remains acidic and needs to get basic so that various enzymes can get active and can act on them, same goes with trypsin which remains as trypsinogen and converts into trypsin to act on food in the small intestine by changing the medium,

the other options in the above questions, can be correct, but not in the case of digestive enzymes, as they are solely govern by changing the ph of the medium in which they are acting

a small diagrammatic representation is being provided below to understand the different types of enzymes and their location of use.