Which of the following is not a nucleoside?

1. Uridine

2. Cytidylic acid CMP

3. Thymidine

4. Guanosine

Identify the given compound:

1. An amino acid

2. A purine base

3. Polysaccharide containing nitrogen

4. Prostaglandin

The following diagram depicts the structure of a:

1. Nucleoside
2. Nucleotide
3. Nitrogen containing Monosaccharide
4. Glycoprotein

Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by -

1. Base-sugar-OH

2. Base-sugar-phosphate

3. Sugar-phosphate

4. (Base-sugar-phosphate)_n

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

Which of the following represents uridylic acid?

1. Uracil + Ribose

2. Uridine + Phosphoric acid

3. Uracil + Phosphoric acid

4. Uridine + Ribose + Phosphoric acid

C’ represents carbon of

1.sugar of nucleotides

2.Nitrogenous bases of nucleotides

3.Both 1 and 2

4.None of the above

Nucleotide is made up of

1. Heterocyclic compound, Monosaccharide,
Phosphoric acid.
2. Nitrogenous base, hexose sugar, phosphate.
3. Hetrocylic compound and pentose sugar only.
4. Hetrocyclic compound and nucleoside.

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

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