EXERCISE: 1
A. MULTIPLE CHOICE TYPE

(Choose the best option out of the four alternatives a, b, c, and d)

Question 1:

The Chromatin material is formed forms of

(a) DNA only
(b) DNA and histones
(c) Histones only
(d) Nucleotides

Solution 1:

(b) DNA and Histones

Question 2:

The term “chromosomes” literally means

(a) Inherited bodies
(b) Twisted threads
(c) Coloured bodies
(d) Shining threads

Solution 2:

(c) Coloured bodies

B. VERY SHORT ANSWER TYPE:

Questions 1:

1. Name the following:
a) The repeating components of each DNA strand lengthwise.
b) The complex 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.

Solution 1:

(a) Nucleotides.
(b) Nucleosome.
(c) Hydrogen Bond.
(d) Phosphate, Sugar and Nitrogenous base.

Class X

Chapter 1 – Cell Cycle, Cell Division and Structure Of Chromosomes Biology

_____________________________________________________________________________