Biology
Given below is a schematic diagram of a portion of DNA.
(a) How many strands are shown in the diagram?
(b) How many nucleotides have been shown in each strand?
(c) Name the parts numbered 1,2,3,4 and 5 respectively.
(d) Name the DNA unit constituted by the parts 1, 2 and 3 collectively.
Chromosomes
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Answer
(a) 2 strands are shown in the diagram.
(b) 2 on each strand.
(c) The parts are as follows:
- 1 → Phosphate
- 2 → Sugar
- 3 → Bases
- 4 → Hydrogen Bond
- 5 → Base
(d) The DNA unit constituted by the parts 1, 2 and 3 collectively is called Nucleotide.
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