Molecular Biology

1. DNA Polymerase Synthesizes

DNA in 5’-3’ Direction

DNA in 3’-5’ Direction

Mrna in 3’-5’ Direction

Mrna in 5’-3’ Direction

2. Which of the Following can Pass through a Nuclear Pore?

Ribosomal Subunits

Mitochondria

Mrna

Both (A) and (C)

3. Antibiotics are used in Genetic Engineering. they are Useful

To Keep Culture Free of Microbial infections

To Select Healthy Vectors

To Identify Replication Start Sites

As Selectable Markers

4. A Specialized Transducing Phage that attacks an infected Cell with Lysogenic Stage of the same Virus Produces

HFT

HFR

5. The Point at which Polytene Chromosomes Appear to be attached together is Known as

Centriole

Centromere

Chromomere

Chromocenter

6. Euchromatin

Stains Lightly

Is Partially Condensed

Genetically Active Chromatin with Genes

All of the Above

7. Which of the Following Rnas are the Most Abundant in an animal Cell?

Mrna

Trna

Mirna

Rrna

8. Eukaryotic Entities

In the Presence of a Camp Molecule, It Carries Out Protein Synthesis

Have only Operons assisting in Gene Expression

Transcription Takes Place in the Nucleus and Translation in the Cytoplasm

Transcription Occurs in the Cytoplasm and Translation in Nucleus

9. Purine Base Found in RNA is

Cytosine

Thymine

Guanine

Uracil

10. In a Cell as Per the Operon Concept, the Regulator Gene Governs the Chemical Reactions by

Inhibiting the Substrate in the Reaction

Inhibiting Migration of mRNA into Cytoplasm

mRNA Transcription inhibited

Enzyme-Reaction inactivation

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