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Trueman Test: Molecular Basis of Inheritance- 1 - NEET MCQ


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25 Questions MCQ Test Biology Class 12 - Trueman Test: Molecular Basis of Inheritance- 1

Trueman Test: Molecular Basis of Inheritance- 1 for NEET 2024 is part of Biology Class 12 preparation. The Trueman Test: Molecular Basis of Inheritance- 1 questions and answers have been prepared according to the NEET exam syllabus.The Trueman Test: Molecular Basis of Inheritance- 1 MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Trueman Test: Molecular Basis of Inheritance- 1 below.
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Trueman Test: Molecular Basis of Inheritance- 1 - Question 1

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

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 1

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.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 2

Name the conjugated protein used as genetic material in living cells?

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 2

Nucleoproteins are the chromosome made up of DNA, some RNA and histone proteins. They act as genetic material in living cells.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 3

By which bonds the purine & pyrimidine pairs of Complementary Strands of DNA held together?

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 3

In complementary strands of DNA, purines and pyrimidine are held together by Hydrogen bond (H-bond). Adenine and Thymine have double hydrogen bond and cytosine and guanine are held by triple hydrogen bond.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 4

There is no DNA in

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 4

In mature RBCs nucleus is absent and there is no DNA. Mature DNA do not divide to form new cells.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 5

RNA polymerase is only capable of catalyzing the process of ______.

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 5

In the process of transcription RNA polymerase is only capable of elongation.
Initiation factor sigma helps in the process of initiation while termination factor Rho is helping in termination of the process.
So the correct option is 'Elongation'.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 6

The strand of DNA that forms mRNA is called?

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 6

The strand of DNA that forms mRNA is called the template strand or the antisense strand. During transcription, the DNA molecule unwinds, and one of the strands (the template strand) is used as a template to synthesize a complementary RNA molecule, which is called messenger RNA (mRNA). The other strand of DNA, which is not used as a template during transcription, is called the coding strand or the sense strand because it has the same sequence as the mRNA molecule (except for the presence of thymine instead of uracil).

Trueman Test: Molecular Basis of Inheritance- 1 - Question 7

Codon is made up of

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 7

Codon is triplet means made up three nucleotides. Each codon codes for one amino acid to form proteins during protein synthesis.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 8

The code AUG stands for

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 8

Code AUG code for Methionine. In all organism first amino acid coded is methionine by codon AUG.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 9

Protein synthesis occurs over

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 9

Protein synthesis occurs over ribosomes which are also called protein factories of cell. Each ribosomes have two parts 40S and 60S in eukaryotes and 30S and 50S in prokaryotes.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 10

Okazaki is known for his contribution to the understanding of

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 10

Okazaki discovered the way in which the lagging strand of DNA is replicated via fragments by conducting an experiment using E. coli named the strand Okazaki fragment. Okazaki fragments are the fragmented piece of newly synthesized DNA strand called as lagging strand during DNA replication. They are complementary to the lagging template strand, together forming short double-stranded DNA sections.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 11

What is called Griffith effect?

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 11

Griffith carried out experiment on mice using pneumonia causing bacteria to show that DNA is the genetic material by transforming non-virulent strain into virulent strain which is called bacterial transformation.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 12

Enzymes called ______ add complementary nucleotides, floating inside the nucleus.

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 12

Enzymes DNA polymerase adds complementary nucleotides. This enzyme is present floating inside the nucleus.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 13

Repressor proteins are coded for by ______ genes.

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 13

Regulator genes codes for repressor proteins during translation of DNA into protein via mRNA.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 14

RNA polymerase is only capable of catalyzing the process of

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 14

In the process of transcription RNA polymerase is only capable of elongation.

Initiation factor sigma helps in the process of initiation while termination factor Rho is helping in termination of the process.

So the correct option is 'Elongation'.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 15

What is the length of the DNA double helix, if the total number of bp (base pair) is 6.6 x 109?

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 15
  • The distance between 2 consecutive bp is 0.34 nm. The formula to calculate the length of the DNA double helix:
  • The length of the DNA double helix = The total number of bp x distance between two consecutive bp.
  • As a result, we get 2.2 m as the length of the DNA double helix.
Trueman Test: Molecular Basis of Inheritance- 1 - Question 16

What is the purpose of the Human Genome Project?

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 16

The main purpose of human genome project launched in 1990 was to identify the sequence of human DNA.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 17

Human genome project was closely associated with the rapid development of a new area in biology called as

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 17

Human genome project was associated with the rapid development of new area of biology called as bioinformatics. This branch of biological science is used to known the sequence of gene on Chromosome of living organisms.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 18

The human genome contains ------------- nucleotide bases.

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 18

Human genome contains 3164.7 million nucleotide bases.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 19

Gel electrophoresis is used for

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 19

Gel electrophoresis technique is used for separation of DNA fragments according to their size. This is an important tool to study the genome of an individual. 

Trueman Test: Molecular Basis of Inheritance- 1 - Question 20

Which chromosome of human genome contains least number of genes?

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 20

There are 23 pairs of chromosome in human cells. The chromosome Y is the smallest and contain least number of gene (231) and chromosome 1 contain highest number of gene (2968).

Trueman Test: Molecular Basis of Inheritance- 1 - Question 21

Satellite DNA is useful tool in

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 21

About 3% or so of the human genome has highly repetitive sequences or simple-sequence DNA or simple sequence repeats or satellite DNA. It does not encode proteins or RNAs but have identifiable functional importance owing to their presence in centromeres and telomeres; which makes option B wrong as genetic engineering mainly aims at transfer of genes producing desired products. Satellite DNA show relative uniformity within species and great variability between closely related species. This DNA polymorphism is revealed during DNA finger printing in identification of suspect. For the purpose, restriction enzyme digested DNA samples are sorted by gel electrophoresis followed by southern blotting. Finally, radioactive probes are washed over the nylon surface to allow their joining to any DNA fragments of same composition. Correct option is A. Sex determination in human is governed by presence or absence of Y-chromosome, not by satellite DNA which makes option D wrong. Organ transplantation mainly aims at immune system; option C is wrong.

So, the correct answer is 'Forensic science'

Trueman Test: Molecular Basis of Inheritance- 1 - Question 22

What are the set of positively charged basic proteins called as?

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 22
  • Histones are rich in basic amino acid (AA) residues such as lysine and arginine.
  • These two amino acids carry a positive charge at their side chains.
  • Due to this reason, histones are called as the set of positively charged basic proteins.
Trueman Test: Molecular Basis of Inheritance- 1 - Question 23

For DNA finger printing, the DNA is obtained from

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 23

The DNA required for finger printing can be obtained from WBCs, root hair cells and body secretion as all the cells contain same type of genetic makeup.

Trueman Test: Molecular Basis of Inheritance- 1 - Question 24

How many bp are present in a typical nucleosome?

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 24
  • Nucleosomes are the bead-like structures which are present on a chromatin.
  • These nucleosomes contain the DNA, which is the genetic material.
  • Such a typical nucleosome contains nearly 200 bp.
Trueman Test: Molecular Basis of Inheritance- 1 - Question 25

DNA is made of two chains that twist about one another in the shape of a _______.

Detailed Solution for Trueman Test: Molecular Basis of Inheritance- 1 - Question 25

The double helix describes the appearance of double-stranded DNA, which is composed of two linear strands that run opposite to each other, or anti-parallel, and twist together. Each DNA strand within the double helix is a long, linear molecule made of smaller units called nucleotides that form a chain. 

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