Exon part of m-RNAs have code for:

1. Protein

2. Lipid

3. Carbohydrate

4. Phospholipid

Which of the following is the initiation codon:

1. UAG

2. AUC

3. AUG

4. CCU

The method of DNA replication in which two strands of DNA separate and synthesize new strands is called:

1. Dispersive

2. Conservative

3. Semiconservative

4. Non-conservative

Which of the following is correct about H-bonding in nucleotide:
1.  A–T G–C
2.  A–G T–C
3.  G–T A–C
4.  A–A T–T

Chargaff's rule states that in an organism:

In the genetic code dictionary, how many codons are used to code for all the 20 essential amino acids:

1. 20

2. 64

3. 61

4. 60

What does "lac" refer to in what we call the lac operon:

1. Lactose

2. Lactase

3. Lac insect

4. The number 1,00,000

During transcription, the DNA site at which RNA polymerase binds is called:

1. Promoter

2. Regulator

3. Receptor

4. Enhancer

Which one of the following triplet codes, is correctly matched with its specificity for an amino acid in protein synthesis or as a 'start' or 'stop' codon:

1. UCG – Start

2. UUU – Stop

3. UGU – Leucine

4. UAC – Tyrosine

In Negative operon:
1.  Inducer binds with repressor
2.  Co-repressor does not bind with repressor
3.  Corepressor binds with inducer
4.  CAMP has a negative effect on the lac operon