Given below is the diagrammatic representation of one of the categories of small
molecular weight organic compounds in the living tissues. Identify the category shown
and the one blank component X in it
Category Component
1. Cholesterol Guanin
2. Amino acid NH2
3. Nucleotide Adenine
4. Nucleoside Uracil
Which one is the most abundant protein in the animal world?
1. Trypsin
2. Haemoglobin
3. Collagen
4. Insulin
Which one out of A-D given below correctly represents the structural formula of the basic amino acid?
1. C
2. D
3. A
4. B
Which one of the following structural formulae of two organic compounds is correctly
identified with its related function?
1. A - triglyceride major - a source of energy
2. A - Lecithin - a component of cell membrane
3. B - Adenine - forms nucleotides of the nucleic acids
4. Both 2. and 3.
Which one of the following pairs is wrongly matched?
1. Detergents - Lipase
2. Alcohol - Nitrogenase
3. Fruit juice - Pectinase
4. Textile - Amylase
Carbohydrates are commonly found as starch in plant storage organs. Which of the
following five properties of starch (A-E) make it useful as a storage material?
(A) Easily translocated
(B) Chemically non-reactive
(C) Easily digested by animals
(D) Osmotically inactive
(E) Synthesized during photosynthesis
The useful properties are
1. (B) and (C)
2. (B) and (D)
3. (A), (C) and (E)
4. (A) and (E)
Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched
with the category mentioned against it?
1. Thymine, Uracil - Pyrimidines
2. Uracil, Cytosine - Pyrimidines
3. Guanine, Adenine - Purines
4. Adenine, Thymine - Purines
A competive inhibitor of succinic dehydrogenase is
1. malonate
2. oxaloacetate
3. -ketoglutarate
4. malate
An organic substance bound to an enzyme and essential for its activity is called:
1. coenzyme
2. holoenzyme
3. apoenzyme
4. isoenzyme
The enzyme amylase belongs to the class
1. hydrolase
2. isomerase
3. transferase
4. lyases