Molecular Biology

1. In prokaryotes there are

Three types of DNA polymerases

One type of RNA polymerase

Three types of RNA polymerase

Both a and b

2. This Condition in Lac Operon Facilitates the Condition of Lac Genes being Transcribed at High Levels

Low Glucose, High Lactose

Low Glucose, Low Lactose

High Glucose, High Lactose

High Glucose, Low Lactose

3. Joining and Cutting DNA are these Techniques

Dna Synthesis

Dna Degradation

Dna Manipulation

Dna Replication

4. In Eukaryotes, in order to initiate Transcription

Rna Strand Must be Present

Rna Polymerase Must be Present

Core Promoter Sequence Must be Present

None of these

5. Transfer of genetic material from one cell to another that can alter the genetic makeup of recipient cell is called

Mutation

Transduction

Replication

Variation

6. In this Type of DNA Replication, of the Two Newly formed Molecules, one is Purely a New one and the other is an Old one

Dispersive

Conservative

Semiconservative

Both (B) and (C)

7. Chromosomes are composed of

40% protein and 60% DNA

50% protein and 50% DNA

70% protein and 30% DNA

60% protein and 40% DNA

8. Which of the Following are Synthesised in the Nucleolus?

Trna

Rrna

DNA

All of the Above

9. A Phosphodiester Bond is Present in

Nucleic Acids in a Nucleotide

Monosaccharides in a Polysaccharide

Amino Acids in a Polypeptide

Fatty Acids in a Diglyceride

10. In sickle cell Hb, which chain is affected?

Alpha chain

Beta Chain

Both of these

None of these

Question 1 of 10

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