Identify the given compound:
1. An amino acid
2. A purine base
3. Polysaccharide containing nitrogen
4. Prostaglandin
Inhibition of succinate dehydrogenase by malonate is an example of:
1. Non-competitive inhibition
2. Competitive inhibition
3. Antagonism
4. Synergism
I. Small organic molecules
II. Difficult to remove without denaturing the enzyme
III. Haem is an example
The above characters are of which of the following co-factors of an enzyme?
1. Metal ions
2. Prosthetic groups
3. Co-enzymes
4. Apoenzymes
The Km value of an enzyme denotes the substrate concentration at which the enzyme catalyzed reaction:
1. Reaches Vmax
2. Shows a decline in the rate of reaction
3. Attains ½ Vmax
4. Finally stops
NAD and NADP are consider as
1. Apoenzyme and cofactor respectively.
2. Coenzyme and co-factor respectively.
3. Both as co-enzyme.
4. Apoenzyme and holoenzyme respectively.
The following diagram shows the molecular structure of:
1. A hexose sugar
2. An aromatic amino acid
3. A nitrogenous base found in RNA
4. An important constituent of a DNA nucleotide.
The number of correct statements amongst the given statements is:
I. Amino acids are substitute methanes.
II. The R group in serine is hydroxyl-methyl.
III. Arachidonic acid has 20 carbon atoms including the carboxyl carbon.
IV. Glycerol is trihydroxypropane.
V. Lecithin is a phospholipid.
1. 2
2. 3
3. 4
4. 5
Which of the following is the simplest amino acid?
1. Alanine
2. Asparagine
3. Glycine
4. Tyrosine
The essential chemical components of many coenzymes are:
1. Nucleic acid
2. Carbohydrates
3. Vitamins
4. Proteins
Which of the following is not a strict macromolecules?
(1)Carbohydrates
(2)Nucleic acids
(3)Proteins
(4)Lipids