Which of the following is an example of branched
polymer?
1. Chitin.
2. Cellulose.
3. Amylose.
4. Glycogen

During catalytic cycle of an enzyme action the binding
of the __a__ induces the __b__ to alter its shape. Here
a and b is _________
1. Substrate, enzyme.
2. Enzyme, substrate.
3. Substrate, Substrate.
4. Enzyme, Enzyme

Long protein chain folded upon itself like a hollow woolen ball and gives us a 3-dimensional view of a protein belongs to
1. Primary structure
2. Secondary structure
3. Tertiary structure
4. Quaternary structure

In nucleic acid the bond between the phosphate and hydroxyl group of sugar is
1. Hydrogen bond
2. Glycosidic bond
3. Ester bond
4. Peptide bond

Prosthetic groups differ from co-enzymes, in which:

"Ramachandran plot" is used to confirm the structure of:

1. RNA

2. Proteins

3. Triacylglycerides

4. DNA

Study the given statements -

i. A dehydration reaction (or condensation reaction) is the process in which water molecules are produced as a polymer is formed from monomers.

ii. The four main categories of macromolecules present in living systems are proteins, nucleic acids, carbohydrates, and lipids.

iii. Glucose is the main monosaccharide used by human cells for energy.

iv. The building blocks or monomers of nucleic acid molecules are called nucleosides.
How many statements are correct-?

1. i

2. ii

3. iii

4. iv

The steps in catalytic cycle of an enzyme action are given in random order

I. The enzyme releases the products. Now enzyme is free to bind another substrate

II. The active sites, now in close proximity of substrate break the bond of substrate and E – P complex forms

III. Binding of substrate induces the enzyme to alter its shape fitting more tightly around the substrate

IV. The substrate binds to the active site of enzyme (i.e., fitting into the active site.
The correct order is

1. I, II, III, IV

2. IV, III, II, I

3. I, III, II, IV

4. I, II, IV, III

Which one of the following biomolecules is correctly characterized?

1. Lecithin – a phosphorylated glyceride found in cell membrane

2. Palmitic acid – an unsaturated fatty acid with 18 carbon atoms

3. Adenylic acid – adenosine with a glucose and phosphate molecule

4. Alanine amino acid – contains an amino group and an acidic group anywhere in the molecule

The most abundant chemical in living organisms is -
1. Water.
2. Protein.
3. Carbohydrate.
4. Nucleic acid.