Structure of protein formed by aggregation of polypeptides is:

1. Primary structure
2. Secondary structure
3. Tertiary structure
4. Quaternary structure
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Answer: D
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Protein having the role of storage of amino acids in milk is:

1. Casein
2. Ovalbumin
3. Keratin
4. Collagen
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Answer: A
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Most abundant organic compounds to be found in the cells are:

1. Water
2. Proteins
3. Carbohydrates
4. Lipids
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Answer: B
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Human body contains more than ten thousands proteins all of which are composed of unique and specific arrangements of how many amino acids?

1. 25
2. 20
3. 170
4. 300
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Answer: B
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In living organisms the formation of peptide bond takes place by condensation for which OH group is released from:

1. Carboxyl group of first amino acid
2. Carboxyl group of second amino acid
3. Amino group of first amino acid
4. Amino group of second amino acid
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Answer: A
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Most abundant type of RNA in cells is:

1. rRNA

2. mRNA

3. tRNA

4. miRNA

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Answer: A
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Type of RNA that folds upon itself to give double helical character mostly is:

1. rRNA
2. mRNA
3. tRNA
4. miRNA
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Answer: C
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Compund formed by combination of a pentose sugar and nitrogenous base is:

1. Polynucleotide
2. Dinucleotide
3. Nucleoside
4. Nucleotide
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Answer: C
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In charging of tRNA one molecule of ATP is used by aminoacyl-tRNA synthetase complex to attach one amino acid at _____________ sequence of tRNA.

1. ---CCA3’
2. ---GGU3’
3. ---G5’
4. ---G3’
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Answer: A
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mRNA has leader sequence of 8 to 13 nucleotides for which complementary sequence is present on:

1. rRNA
2. mRNA
3. tRNA
4. miRNA
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Answer: A
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