NEET : Multiple Choice questions: Transcription unit

1. The flow of genetic information from the DNA to mRNA is called as

A. Trans duction

B. Transformation 

C. Translation 

D. Transcription

Answer: D Explanation 

2.Consider the following sentences give below  and select the number of correct statement. 

1. Transcription occur in cytosol or Cytoplasm in Bacteria.

2. Both strands of DNA are participated in process of transcription .

3. Transcription occur in Nucleus  in Eukaryotic.

4. Only one strand of DNA is participated in process of transcription.

A. One              B. Two

C. Three.          D. Four

Answer: B Explanation

3.Consider the following statement that are consequence if both strand of DNA are involved in process of transcription. Select the correct code.

1.If both strand are involved than protein is formed with highest number of amino acids.

2.If both strand are involved than twins are formed with different combination of protein.
3. If both strand are involved than it will produce two kinds of RNA and as a result, two different kinds of protein are formed. It may create complications among the organism.

4. If both strand are involved than two complementary RNA strand form double strand RNA and it prevent process of protein formation.

A. 1 and 2 B. 3 and 4

C. 1 and 4 D. 2 and 4

Answer: B Explanation

4.Which one of the following statement make transcription process futile.

A.If both strand are involved than protein is formed with highest number of amino acids.

B.If both strand are involved than twins are formed with different combination of protein.
C. If both strand are involved than it will produce two kinds of RNA and as a result, two different kinds of protein are formed. It may create complications among the organism.

D. If both strand are involved than two complementary RNA strand form double strand RNA and it prevent process of protein formation.

Answer: D Explanation

5.Which one of the following genetic of region is not a part of Transcription unit.

A. Structural 

B. Promoter

C. Terminator

D. Repressor

Answer: D Explanation

6. In transcription unit, Promoter is located at 

A. 3' end upstream with respect to template strand.

B. 5' end upstream with respect to template strand.

C. 3' end upstream with respect to coding strand.

D. 5' end upstream with respect to coding strand.

Answer: D Explanation

7. Structural gene is located between

A.Anywhere on DNA template 

B. Promoter and Terminator 

C. After the Terminator  

D. Before the promote

Answer: B Explanation

8. Terminator is located at 

A. 3' end downstream with respect to template strand.

B. 5' end downstream with respect to template strand.

C. 3' end downstream with respect to coding strand.

D. 5' end downstream with respect to coding strand.

Answer: C Explanation

9. Template strand 

A. has polarity 5' to 3' involved in transcription.

B. has polarity 3' to 5' involved in transcription.

C. has polarity 5' to 3' and not  involved in transcription.

D. has polarity 3' to 5' and not involved   in transcription.

Answer: B Explanation

10.Coding strand 

A. has polarity 5' to 3' involved in transcription.

B. has polarity 3' to 5' involved in transcription.

C. has polarity 5' to 3' and not  involved in transcription.

D. has polarity 3' to 5' and not involved   in transcription.

Answer: C Explanation

11.Consider the following diagram  and select the code after matching.

            A : Terminator

            B : Promoter

            C : Coding strand 

            D : Template strand

A. A-1 B-2 C-3 D-4

B. A-2 B-1 C-4 D-3

C. A-4 B-3 C-2 D-1

D. A-4 B-2 C-3 D-1

Answer: B Explanation