RNA  is a polymer of
1. Ribonucleotides 
2. Deoxyribonucleotides
3. Deoxyribonucleosides
4. Ribonucleosides
 

Subtopic:  Nucleic Acid |
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tRNA constitutes about
1. 70-80% of the total RNA 
2. 15% of the total RNA 
3. 5% of the total RNA
4. 1-3% of the total RNA
Subtopic:  Nucleic Acid |
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Essential oils are those which are
1. Essential for plants themselves
2. Always found only in animal products like butter
3. Never used in soaps and cosmetics
4. A source of perfumes
 
Subtopic:  Lipids |
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Highest level of structural organisation present in Keratin of hair is
1. Tertiary structure of protein
2. α\alpha-helical structure of protein
3. β\beta-pleated structure
4. Primary structure of protein
 
Subtopic:  Proteins |
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The backbone of a nucleic acid strand is made up of
1. Base and phosphate
2. Sugar and phosphate
3. Sugar and base
4. Sugar, base and phosphate
Subtopic:  The DNA |
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Which of the following is not present in DNA?
1. Cytosine 
2. Adenine
3. Guanine
4. Thiamine
 
Subtopic:  Nucleic Acid |
 85%
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What should be added to a nucleoside to yield a nucleotide? 
1. Sugar
2. Phosphoric acid
3. Nitrogenous base
4. Sugar and nitrogenous base
Subtopic:  Nucleic Acid: Nucleotides |
 89%
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The two strands of DNA are coiled around
1. Each other
2. Differently
3. A common axis
4. Different axis
 
Subtopic:  The DNA |
 59%
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The two strands of DNA are held together by bonds of 
1. Nitrogen 
2. Oxygen
3. Hydrogen
4. Carbon
Subtopic:  The DNA |
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The given amino acid is _______ in nature

1. Acidic 
2. Basic
3. Neutral
4. Aromatic
Subtopic:  Amino Acids |
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