Transcription, Genetic Code and Types of RNA, Class 12 Biology NCERT Solutions

1. There will be total 10 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. Removal of the introns and joining of the exons in a defined order in a transcription unit is called

Capping

Transformation

Tailing

Splicing

Your comments:

Question 1 of 10

2. During transcription, the DNA site at which RNA polymerase binds is called

Enhancer

Receptor

Promoter

Regulator

Your comments:

Question 2 of 10

3. The coding segment of DNA is

Muton

Replicon

Intron

Exon

Your comments:

Question 3 of 10

4. Some amino acids are coded by more than one codon; hence, the code is

Unambiguous

Universal

Degenerate

Initiator

Your comments:

Question 4 of 10

5. Out of 64 codons, the number of codons with GGG is

4

1

2

6

Your comments:

Question 5 of 10

6. Control of gene expression takes place at the level of

DNA replication

Transcription

Translation

None of these

Your comments:

Question 6 of 10

7. The amino acid attaches to the tRNA at its

5' end

Anticodon site

3' end

DHU loop

Your comments:

Question 7 of 10

8. The portion of DNA which contains information for an entire polypeptide is called

Operon

Recon

Muton

Cistron

Your comments:

Question 8 of 10

9. Which of the following steps in transcription is catalysed by RNA polymerase?

Initiation

Elongation

Termination

All of the above

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Question 9 of 10

10. DNA element with the ability to change its position is called

Cistron

Intron

Recon

Transposon

Your comments:

Question 10 of 10

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