Molecular Genetics. - Tamil Nadu Board STD 12 Bio Zoology Questions - Vidyadip

Question types

Molecular Genetics. question types

154 questions across 5 question groups — pick any mix to generate a Bio Zoology paper with step-by-step answer keys.

154

Questions

5

Question groups

5

Question types

Choose the most appropriate answer from the given alternatives and write the option code and the corresponding answer.

[ 2 Marks Questions ]

Match The Following.

[ 3 Marks Questions ]

[ 5 Marks Questions ]

Sample Questions

Molecular Genetics. questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1Choose the most appropriate answer from the given alternatives and write the option code and the corresponding answer.1 Mark

Which one of the following is wrongly matched?

A
Transcription – Copying information from DNA to RNA
B
Translation – Decoding information from mRNA to protein
C
Replication – Making of DNA copies
✓
Splicing – Joining of exons with introns

Answer: D.

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Q 2Choose the most appropriate answer from the given alternatives and write the option code and the corresponding answer.1 Mark

SNP stands for

A
Single nucleotide Polymorphism
B
Single Nucleoside Polypeptide
✓
Single nucleotide Polymorphism
D
Single nucleotide polymer

Answer: C.

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Q 3Choose the most appropriate answer from the given alternatives and write the option code and the corresponding answer.1 Mark

In DNA fingerprinting, separation of DNA fragments is done by __________

A
Centrifugation
✓
Electrophoresis
C
X-ray diffraction
D
denaturation

Answer: B.

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Q 4Choose the most appropriate answer from the given alternatives and write the option code and the corresponding answer.1 Mark

DNA finger printing technique was developed by

A
Jacob and Monod
✓
Alec Jeffreys
C
Frederick Sanger
D
none of above

Answer: B.

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Q 5Choose the most appropriate answer from the given alternatives and write the option code and the corresponding answer.1 Mark

How many structural genes are located in lac operon of E.Coli?

A
4
✓
3
C
2
D
1

Answer: B.

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Q 6[ 2 Marks Questions ]2 Marks

Complete the molecular processes by naming them

DNA → DNA
mRNA → Protein
RNA transcript → mRNA

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Q 7[ 2 Marks Questions ]2 Marks

Following is a DNA sequence representing a part of the gene TAC TCG CCC TAT UAA CCC AAA ACC TCT using this derive A.

The RNA transcript
The spliced mRNA (consider all the codons with two Aderine bases are introns)
The total number of amino acids coded by the mRNA

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Q 8[ 2 Marks Questions ]2 Marks

A DNA fragment possesses 32 adenine bases and 32 cytosine bases. How many total numbers of nucleotides does that DNA fragment contain? Explain.

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Q 9[ 2 Marks Questions ]2 Marks

An mRNA strand has a series of triplet codons of which the first three codons are given below
(a) AUG
(b) UUU
(c) UGC
(i) Name the amino acid encoded by these triplet codons.
(ii) Mention the DNA sequence from which these triplet codons would have transcribed?

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Q 10[ 2 Marks Questions ]2 Marks

Mention any four areas where DNA fingerprinting can be used.

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Q 11Match The Following.4 Marks

(A) DNA Polymerase	(i) Charging of tRNA
(B) Amino acyl synthetase	(ii) Synthesize DNA
(C) DNA helicase	(iii) Joins DNA fragments
(D) DNA ligase	(iv) Unwinds DNA strand

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Q 12Match The Following.4 Marks

(A) Semi - conservative model	i) Griffith
(B) Transformation	ii) R. Holley
(C) Clover leaf model	iii) Jacob and Monod
(D) Lac operon model	iv) Meselson and Stahl

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Q 13[ 3 Marks Questions ]3 Marks

Given below are the structures of tRNA molecules which are involved in the translation process. In one tRNA, the codon is mentioned but not the amino acid. In another tRNA molecule, the amino acid is named and not the codon. Complete the figure by mentioning the respective amino acids and codons.

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Q 14[ 3 Marks Questions ]3 Marks

Explain the components of operon.

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Q 15[ 3 Marks Questions ]3 Marks

What are the components of initiation complex of prokaryotic translation?

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Q 16[ 3 Marks Questions ]3 Marks

Expand and define ORF.

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Q 17[ 3 Marks Questions ]3 Marks

Explain the nature of eukaryotic ribosome.

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Q 18[ 5 Marks Questions ]5 Marks

Draw a flow chart depicting the steps of DNA finger printings technique

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Q 19[ 5 Marks Questions ]5 Marks

Describe the principle involved in DNA fingerprinting technique.

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Q 20[ 5 Marks Questions ]5 Marks

Write the salient features of Human Genome Project.

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Q 21[ 5 Marks Questions ]5 Marks

What are the objectives of Human Genome project?

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Q 22[ 5 Marks Questions ]5 Marks

Explain the mechanism of AteArperon of the E-coli.

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