Molecular Basis of Inheritance Test

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Molecular Basis of Inheritance Test - 1

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Question 1
1 / -0

Genetic information is carried out by long chain molecule made up of

A
Enzymes

B
Amino acids

C
Histone proteins

D
Nucleotides

Solution

Explanation:

Genetic information is carried out by DNA and RNA. Both DNA and RNA are called genetic material, made up of long chain of nucleotide having- nitrogenous base, sugar and phosphate ions.
Question 2
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Name the conjugated protein used as genetic material in living cells

A
Lipoprotein

B
Nucleoprotein

C
Metalloprotein

D
Glycoprotein

Solution

Explanation:

Nucleoprotein, conjugated protein consisting of a protein linked to a nucleic acid, either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid). The protein combined with DNA is commonly either histone or protamine; the resulting nucleoproteins are found in chromosomes.
Question 3
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By which bonds the purine & pyrimidine pairs of Complementary Strands of DNA held together?

A
O - bonds

B
N – bonds

C
H – bonds

D
C - bonds

Solution

Explanation:

Three hydrogen bonds form between guanine and cytosine. Two hydrogen bonds form between adenine and thymine or adenine and uracil. Complementary pairs always involve one purine and one pyrimidine base.
Question 4
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There is no DNA in

A
An enucleated ovum

B
Mature RBCs

C
A mature spermatozoan

D
Hair root

Solution

Explanation:

Because of the lack of nuclei and organelles, mature red blood cells do not contain DNA and cannot synthesize any RNA, and consequently cannot divide and have limited repair capabilities. The inability to carry out protein synthesis means that no virus can evolve to target mammalian red blood cells.
Question 5
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______ occurs in RNA instead of the nitrogenous base thymine found in DNA.

A
Guanine

B
Uracil

C
Cytosine

D
Ribose

Solution

Explanation:

Uracil is one of the four nucleobases in the nucleic acid of RNA that are represented by the letters A, G, C and U. The others are adenine, cytosine, and guanine. In RNA, uracil binds to adenine via two hydrogen bonds.
Question 6
1 / -0

The term gene was coined by

A
Khornana

B
Nirenberg

C
Kornberg

D
Johannsen

Solution

Explanation:

The term gene was coined by Johannsen in 1909. He defined gene to be elementary unit of inheritance that specifies the expression of a particular trait.
Question 7
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Which of the following is structural subunit of DNA?

A
Carbohydrate

B
Protein

C
Nucleotides

D
RNA

Solution

Explanation:

Consisting of a five-carbon sugar (deoxyribose) a phosphate group and a nitrogenous base, a nucleotide links with another nucleotides in a repeating sequence, forming a very long, continuous strand of DNA.

The nitrogenous base will be one of four types: Guanine(G), Adenine (A), Cytosine (C) or Thymine (T).
Question 8
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In a DNA strand the nucleotides are held together by:

A
Glycosidic bonds

B
Phosphodiester bonds

C
Peptide bonds

D
Hydrogen bonds

Solution

Explanation:

When nucleotides are incorporated into DNA, adjacent nucleotides are linked by a phosphodiester bond: a covalent bond is formed between the 5' phosphate group of one nucleotide and the 3'-OH group of another.

In this manner, each strand of DNA has a “backbone” of phosphate-sugar-phosphate-sugar-phosphate

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Molecular Basis of Inheritance Test - 1

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Molecular Basis of Inheritance Test - 1

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SHARING IS CARING

Question 1

Enzymes

Amino acids

Histone proteins

Nucleotides

Solution

Question 2

Lipoprotein

Nucleoprotein

Metalloprotein

Glycoprotein

Solution

Question 3

O - bonds

N – bonds

H – bonds

C - bonds

Solution

Question 4

An enucleated ovum

Mature RBCs

A mature spermatozoan

Hair root

Solution

Question 5

Guanine

Uracil

Cytosine

Ribose

Solution

Question 6

Khornana

Nirenberg

Kornberg

Johannsen

Solution

Question 7

Carbohydrate

Protein

Nucleotides

RNA

Solution

Question 8

Glycosidic bonds

Phosphodiester bonds

Peptide bonds

Hydrogen bonds

Solution

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