Nucleotides and Nucleosides

Q.

What is the full form of VIRUS in computer? -

Q.

What is the wobble theory?

Q.

Which of the following RNAs should be most abundant in animal cells?

1. rRNA

2. tRNA

3. mRNA

4. miRNA

Q.

What nitrogenous bases are found in DNA?

Q.

The term 'virus' was first coined by

1. M.W. Beijerinck
2. Dmitri Ivanowsky
3. T.O. Diener
4. W.M. Stanley

Q.

Energy is stored in our body in the form of _________.

1. ATP
2. ADP
3. Fats
4. Carbohydrates

Q.

How much ATP does the electron transport chain produce?

Q. Which type of bond links the nitrogen bases between the two strands of DNA?

1. Peptide bond
2. Phosphodiester bond
3. Hydrogen bond
4. Glycosidic bond

Q.

Histones are rich in amino acids

1. Arginine and Histidine

2. Arginine and Lysine

3. Valine and Histidine

4. Lysine and Histidine

Q.

What is the difference between a nucleotide and nucleoside ? Give two examples of each with their structure.

Q. The rule that in a DNA the amount of adenine equals to that of the thymine and that of guanine equals to that of cytosine is known as

1. Jordan’s rule
2. Chargaff’s rule
3. Allen’s rule
4. Stahl’s rule.

Q. Compounds that contain a nitrogenous base, a sugar, and a phosphate group are called (i)_______. The nitrogenous bases that bind to the sugar are of two types;(ii)______and (iii)______, and they are linked to the sugar through (iv)______ bond.

1. Nucleotides Purines Pyrimidines Hydrogen

2. Nucleosides Purines PAH Peptide

3. Nucleases Cytosine Pyrimidines Phosphodiester

4. Nucleotides Purines Pyrimidines Disulfide

Q.

Mention one role of the sigma factor in transcription.

Q.

Which is common in both DNA and RNA?

1. Adenine, uracil, cytosine

2. Adenine, guanine, cytosine

3. Guanine, uracil, thymine

4. Adenine, guanine, thymine

Q.

Which one of the following also acts as a catalyst in a bacterial cell?

1. 23S rRNA

2. 5S rRNA

3. snRNA

4. hn RNA

Q.

Which of the following base is not found in DNA?

1. Adenine

2. Guanine

3. Cytosine

4. Uracil

Q.

Which produces more ATP. fat or glucose?

Q.

Histone proteins are rich in which of the following basic amino acids?

1. Arginine and Lysine

2. Alanine and Glycine

3. Histidine and Serine

4. Tyrosine and Cysteine

Q.

Why does A only pair with T?

Q. Antiparallel strands of DNA molecule means

1. One strand turns clockwise
2. Phosphate groups of the two strands share the same position at their ends
3. Phosphate groups at the start of two DNA strands are in opposite positions
4. one strand turns anticlockwise

Q.

The function of mRNA is to

1. Provide specific binding sites for a series of specific t-RNA molecules

2. Hold a group of ribosomes together

3. Transfer the genetic code to ribosomal RNA

4. Transfer the genetic code to DNA

Q.

The sugar present in a nucleotide is a

1. Monosaccharide
   

2. Polysaccharide
   

3. Oligosaccharide

4. Disaccharide
   

Q.

Why is RNA necessary to act as a messenger?

Q.

How do you Identify a Peptide Bond?

Q.

Which of the given RNA carries genetic information transcribed from DNA?

1. mRNA

2. tRNA

3. rRNA

4. snRNA

Q.

What are DNA fragments called?

Q.

What is the enzyme that synthesises ATP called?

Q.

Phosphorus is present in:

1. DNA

2. RNA

3. Protein

4. Both (A) and (B)

Q.

The fully processed hnRNA is called

1. mRNA

2. tRNA

3. rRNA

4. All of these

Q.

What is the difference between nucleosomes and chromatin?