Biomolecules (Biology) · Question 14

Regarding catalytic cycle of an enzyme action, select the correct sequential steps : Choose the correct answer from the options given below :

1. E, A, D, C, B
2. A, E, B, D, C
3. B, A, C, D, E
4. E, D, C, B, A

Which of the following is a nucleotide?

1. Uridine
2. Adenylic acid
3. Guanine
4. Guanosine

Ligases is a class of enzymes responsible for catalysing the linking together of two compounds. Which of the following bonds is not catalysed by it?

1. C – C
2. P – O
3. C – O
4. C – N

Which of the following are not fatty acids? Choose the correct answer from the options given below :

1. C, D and E only
2. A and B only
3. A, D and E only
4. B and C only

Which of the following graphs depicts the effect of substrate concentration on velocity of enzyme catalysed reaction?

1. [figure]
2. [figure]
3. [figure]
4. [figure]

Enzymes that catalyse the removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds, are known as :

1. Transferases
2. Oxidoreductases
3. Dehydrogenases
4. Lyases

Match List-I with List-II. Choose the correct answer from the options given below :

1. A-III, B-IV, C-II, D-I
2. A-III, B-II, C-I, D-IV
3. A-I, B-III, C-II, D-IV
4. A-IV, B-III, C-II, D-I

Cellulose does not form blue colour with Iodine because

1. It is a helical molecule
2. It does not contain complex helices and hence cannot hold iodine molecules
3. It breaks down when iodine reacts with it
4. It is a disaccharide

Malonate inhibits the growth of pathogenic bacteria by inhibiting the activity of

1. Amylase
2. Lipase
3. Dinitrogenase
4. Succinic dehydrogenase

Given below are two statements: In the light of the above statements, choose the correct answer from the options given below:

1. Both Statement I and Statement II are false.
2. Statement I is true but Statement II is false.
3. Statement I is false but Statement II is true.
4. Both Statement I and Statement II are true.