Nucleoside

Q.

A nucleoside is composed of:

Nitrogenous base + sugar + phosphate

Nitrogenous base

Sugar moiety + phosphate

Nitrogenous base + sugar moiety

Q.

Group the following as nitrogenous bases and nucleosides adenine, Cytidine, Thymine, Guanosine, Uracil and Cytosine.

Q. A nucleoside is formed through an N-glycosidic linkage by joining:

1. Phosphate group with nitrogen base
2. Nitrogen base with nitrogen base
3. Nitrogen base with pentose sugar
4. Pentose sugar with phosphate group

Q. Nitrogenous base that is present in RNA but not in DNA

1. Deoxyribose
2. Ribose
3. Cytosine
4. Thymine
5. Uracil

Q. Which is not pentose?

1. Erythrose
2. Ribose
3. Xylose
4. Arabinose

Q. Which of the following combination is false?

1. A-T
2. A-G
3. C-G
4. A-U

Q. Define complex lipids and write the structure of nucleotide and nucleoside?

Q. CCA 3' end of tRNA is called as

1. Anticodon loop
2. DHU loop
3. T $\psi$ C
4. Amino acid binding site

Q. Carboxypeptidase is a

1. Transferase
2. Ligase
3. Isomerase
4. Proteolytic enzyme

Q. How many kinds of N${}_2$ bases in nucleic acids are?

1. Five
2. Three
3. Eight
4. Four

Q.

Group the following as nitrogenous bases and nucleosides:

Adenine, Cytidine, Thymine, Guanosine, Uracil and Cytosine.

Q. Three dimensional shape of tRNA is

1. Clover leaf like
2. L-shaped
3. X-shaped
4. Y-shaped

Q. A nucleoside is formed through an N-glycosidic linkage by joining:

1. Phosphate group with nitrogen base
2. Pentose sugar with phosphate group
3. Nitrogen base with pentose sugar
4. Nitrogen base with nitrogen base

Q.

1. Nucleotide
2. Nucleoside
3. Nucleic acid
4. Nitrogenous base

Q. In nucleoside, where is the nitrogenous base attached to the pentose sugar?

1. Carbon-1' of pentose sugar
2. Carbon-5' of pentose sugar
3. N-1 and N-9
4. Both B and C

Q. A nucleoside is formed through an N-glycosidic linkage by joining:

1. Phosphate group with nitrogen base
2. Nitrogen base with nitrogen base
3. Nitrogen base with pentose sugar
4. Pentose sugar with phosphate group

Q.

A single nucleoside consists of

1. Sugar + Nitrogenous base

2. Nitrogenous base + Phosphate group

3. Sugar + Phosphate

4. Sugar + Nitrogenous base + Phosphate

Q. Nitrogen bases of RNA are

1. ATCG
2. ATUG
3. AUTC
4. AUCG

Q.

Group the following as nitrogenous bases and nucleosides:

Adenine, Cytidine, Thymine, Guanosine, Uracil and Cytosine.

Q. In nucleoside, where is the nitrogenous base attached to the pentose sugar?

1. Carbon-5' of pentose sugar
2. Carbon-1' of pentose sugar
3. N-1 and N-9
4. Both B and C