Which of the following is a pyrimidine base found in DNA?

1. Adenine 2. Guanine
3. Uracil 4. Cytosine

Subtopic:  The DNA |
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Which of the following is also called soluble RNA?

1. tRNA  2. rRNA
3. mRNA 4. siRNA
Subtopic:  Translation |
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A typical nucleosome unit consists of about:

1. 60 base pairs 2. 140 base pairs
3. 200 base pairs 4. 400 base pairs

Subtopic:  DNA Packaging |
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At any instant, RNA is transcribed on which of the following strands of DNA?

1. Coding strand 2. Template strand
3. Lagging strand 4. Leading strand

Subtopic:  Transcription: I |
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To form a nucleoside, a nitrogenous base is linked to a pentose sugar:

1. Through a P-Glycosidic linkage at carbon atom number 1
2. Through a P-Glycosidic linkage at carbon atom number 5
3. Through an N-Glycosidic linkage at carbon atom number 1
4. Through an N-Glycosidic linkage at carbon atom number 5

Subtopic:  The DNA |
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Nucleosomes constitute the repeating subunits of a structure in the nucleus called:

1. Nucleoid 2. Chromatid
3. Solenoid 4. Chromatin
Subtopic:  DNA Packaging |
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Which of the following is true for both transcription and DNA replication?

1. The principle of complementarity governs the processes
2. Only if the two strands act as a template
3. Only a segment of both strands is involved
4. Adenine base pairs with thymine

Subtopic:  DNA Replication | Transcription |
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The structure of the ribosome is made of:

1. rRNA and Proteins
2. rRNA and Polysaccharides
3. mRNA, rRNA and tRNA
4. RNA, DNA and Proteins

Subtopic:  Translation |
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A molecule that can act as a genetic material must fulfil all the following criteria except:

1. It should be able to generate its replica
2. It should chemically and structurally be stable
3. It should provide scope for rapid mutations
4. It should be able to express itself in the form of “Mendelian Characters”

Subtopic:  Search for Genetic Material |
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What defines a coding and a template strand in the transcription unit?

1. Structural gene 2. Ori
3. Terminator 4. Promoter
Subtopic:  Transcription: I |
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