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Biology 10 Chapter 15 - Inheritance - 2
1.
What is the protein called which is present in chromatin?
a) Pentose protein
b) Histone protein
c) Ribose protein
d) Chromate protein
2.
What is wrapped around histone proteins?
a) DNA
b) Chromosomes
c) Lipids
d) RNA
3.
What are the rounds structures called that are formed when DNA wraps around histone proteins?
a) Phenotype
b) Nucleosomes
c) Chromatin
d) Genotype
4.
What is the shape of nucleosomes?
a) Round
b) Oval
c) Rectangular
d) Spherical
5.
What is present between nucleosomes?
a) DNA
b) Lipids
c) Chromosomes
d) RNA
6.
How do the nucleosomes and the DNA between them look like?
a) Beads on a string
b) Beans on a string
c) Beads on a strip
d) Beans on a strip
7.
When James Watson and Francis Crick proposed the structure for DNA?
a) 1957
b) 1987
c) 1953
d) 1963
8.
Which scientist proposed the structure for DNA?
a) F.M Wohler
b) Albert Einstein
c) Isaac Newton
d) James Watson
9.
Which scientist proposed the structure for DNA?
a) Isaac Newton
b) Albert Einstein
c) Francis Crick
d) F.M Wohler
10.
According to the Watson-Crick model, how many polynucleotide strands a DNA molecule consists of?
a) Two
b) Four
c) One
d) Three
11.
In the form of ..........................., polynucleotide strands are coiled around each other?
a) Tetra-helix
b) Single helix
c) Double helix
d) Triple helix
12.
What is present on the outside of a double helix?
a) Nitrogenous bases
b) Pentose-sugar
c) Oxalate-sugar
d) Phosphate-sugar
13.
What is present on the inside of a double helix?
a) Nitrogenous bases
b) Oxalate-sugar
c) Phosphate-sugar
d) Pentose-sugar
14.
In double helix, through which bonds the nitrogenous bases of opposite nucleotides form pairs?
a) None of these
b) Coordinate covalent bonds
c) Hydrogen bonds
d) Covalent bonds
15.
With which adenine forms pairs?
a) Guanine
b) Pyridine
c) Thymine
d) Cytosine
16.
Withwwhichtthyminefformsppairs?
a) Pyridine
b) Adenine
c) Guanine
d) Cytosine
17.
With which cytosine forms pairs?
a) Pyridine
b) Adenine
c) Guanine
d) Thymine
18.
With which guanine forms pairs?
a) Thymine
b) Adenine
c) Pyridine
d) Cytosine
19.
How many hydrogen bonds are formed between adenine and thymine?
a) Three
b) Four
c) One
d) Two
20.
How many hydrogen bonds are formed between cytosine and guanine?
a) One
b) Two
c) Three
d) Four
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