1. Observe the graph:
a. What is meant by Vmax value?
b. Why Vmax not exceeded by any further rise in the substrate concentration?
c. If a chemical substance closely resembling to that of a substrate is introduced into the reaction system, what will be the consequences? Substantiate.
1. Fill in the blanks marked as a, b, c and d. (2)
Adenylic acid Guanylic acid
2. Find the odd one from each group. Justify your answer. (1)
a. Glutamic acid, Lysine, Valine, Collagen
1. Non-protein constituents called cofactors are bound to the enzyme to make the enzyme catalytically active.
a. Name the protein portion of the enzyme. (½)
b. What happens to the catalytic activity when the cofactor is removed from the enzyme? (½)
c. Mention any two kinds of cofactors with examples. (2)
1. Observe the following diagrams and answer the questions.
(A) (B) (C)
a. Identify A to D (2)
b. Name the compound obtained by the fusion of one ‘C’ and three ‘D’. (1)
1. Observe the molecule given below and answer the following questions.
a. Identify the molecule (½)
b. Label 1 and 2. (1)
c. Mention any three structural details of the molecule shown in the diagram. (1½)
1. Fill in the blanks:
Carbohydrate: sugars Proteins: --------------- (1)
2. Analyze the graph showing the activity of salivary amylase.
a. Which is the optimum temperature for salivary amylase obtained from the graph? (½)
b. Why the activity declines below the optimum value? (½)