Molecular Biology

1. A sugarcane cell has _________ chromosomes.

2. The 3’ – 5’ Phosphodiester Linkage Joins

Two DNA Strands

Two Nucleotides

A Nitrogenous Base with Pentose Sugar

Two Nucleosides

3. If the Percentage of Crossing Over between Two Genes is 10, then the Distance between Two Genes will be

5 Morganoid

10 Centimorgans

20 Centimorgans

40 Map Units

4. This is the Reason Why Mendel Did Not Recognize Linkage Phenomenon in His Experiments

He Studied only Pure Plants

He Did Not Have a Powerful Microscope

Characters He Studied Were Situated on Different Chromosomes

Many Chromosomes to Handle

5. Methionine is specified by

Stop codon

AUG

Start codon

Both B and C

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

Trna

Rrna

DNA

All of the Above

7. Regulatory Proteins Turn Transcription off through Binding to a Site Rapidly at the Front of the Promoter and Many Times Even Overlaps the Promoter, this Site is the

Regulatory Site

Operator Site

Suppressor Site

Transcriptional Control Site

8. 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

9. DNA contains

Purines (A and G) pyrimidines (U and (c)

Purines (T and (c) pyrimidines (A and G)

Purines (A and (c) pyrimidines (U and G)

Purines (A and G) pyrimidines (T and (c)

10. Through Transduction When a Recipient Bacterial Cell Picks Up Bacterial DNA, then

The New DNA Replicates Every Time the Recipient Undergoes Multiplication

The DNA is Destroyed

The DNA Modifies to Match/Compliment that of the Recipient

The New DNA Should Enter a New Bacteriophage or It is Lost

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