Question

Name the following :
(a) The repeating components of each DNA strand lengthwise.
(b) The complex structure consisting of DNA strand and a core of histones.
(c) The type of bond which joins the complementary nitrogenous bases.
(d) The three components of a nucleotide.

Answer 1

(a) Nucleotides
(b) Nucleosome
(c) Hydrogen-bond
(d) (i) A sugar (called deoxyribose)

(ii) A Phosphate (1 phosphorus atom joined to 4 oxygen atoms)

(iii) One of 4 bases (Adenine, Guanine, Cytosine, Thymine)