U.C.E BIOLOGY 2000 PAPER 1 QN 32

a) What is an enzyme?

b) State three factors which affect enzyme action.

c) The optimum pH for enzyme X is 2.00 and for enzyme Y is 9.00. suggest the names of the enzymes X and Y, and name the parts of the alimentary canal where you would expect to find each enzyme.

Name of enzyme              parrt of alimentary canal the enzyme is found

X

Y

……………………………..

……………………………..

…………………………………….

…………………………………….

d) State two enzymes contained in the pancreatic juice, the food substance acted on by each enzyme and the product formed in each case.

Enzyme Food substance acted upon          Product formed

(i) ………………..

(ii) ……………….

…………………………………..

……………………………………

……………………

……………………

 

 

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