Cleaner

TUTORJEFF

MATHEMATICS AND SCIENCES

PHYSICAL AND ONLINE TUTORING SERVICES

BIOLOGY: ENZYMES

1. The diagram below shows an enzyme-catalysed reaction taking place in an organism. a) Which of the labelled structures represents an enzyme? Give a reason for your answer. [1] b) Name the structure labelled B, C and P. [3]

c) What enzyme characteristic is shown above? [1]

d) Other than the characteristic mentioned in c above, state any other two. [2] e) Explain how inhibitors influence enzyme-catalysed reaction. [2] 2. The diagram below shows how pH affects an enzyme-catalysed reaction.

(a) Which part A, B and C shows where the enzyme is most active? [1]

(b) Explain the enzyme activity at C. [2]

(c) Is the enzyme working best in acidity or alkalinity? Explain. [1]

(d) What name is given to the process that causes the drop of enzyme activity? [1]

(e) Mention another factor that causes an increase in the reaction. [1] 3. (a) Describe how an enzyme influences biological reactions. [5]

(b) Explain three industrial applications of enzymes. [6] A

B

P

Q

C

Contact this candidate