Biology MCQ - Biology Notes Online

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421 What type of bond holds the two strands of DNA together?

A: Ionic bond

B: Covalent bond

C: Hydrogen bond

D: Peptide bond

Biochemistry MCQ
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422 Which molecule is known as the energy currency of the cell?

A: DNA

B: ATP

C: RNA

D: Glucose

Biochemistry MCQ
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423 What is the basic unit of proteins?

A: Nucleotide

B: Amino acid

C: Monosaccharide

D: Fatty acid

Biochemistry MCQ
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