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96. In hormone insulin, the two polypeptides are joined together by
A. Ionic bonds
B. Covalent bonds
C. Hydrogen bonds
D. Both B and C
Explanation:
97. -CONH- is called
A. Ionic bond
B. Amide bond
C. Peptide bond
D. Both B and C
Explanation:
98. In haemoglobin, the adjacent polypeptide chains are held together by
A. Covalent bonds
B. Hydrogen bonds
C. Both covalent and hydrogen bonds
D. Ionic bonds
Explanation:
99. Uracil of RNA is replaced by …….. in DNA
A. Guanine
B. Adenine
C. Thymine
D. Cytosine
Explanation:
100. The two chains of DNA double helix are held together by
A. Oxygen bonds
B. Peptide bonds
C. Covalent bond
D. Hydrogen bonds
Explanation:
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