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Chapter 15: Q. 10 (page 391)

Which feature of promoters can be found in both prokaryotes and eukaryotes? a. GC box b. TATA box c. octamer box d. -10 and -35 sequences

Short Answer

Expert verified

Option b is correct.

Step by step solution

01

Step 1. Introduction

Promoters are present in DNA which is the region from where RNA polymerase starts to transcribe genes. It basically initiates transcription.

02

Step 2. Explanation of the correct option

Option b is correct because the TATA box is found both in prokaryotes as well as Eukaryotes.

TATA box sequence resembles the -10 sequence in prokaryotes and in eukaryotes its located at about +25.

03

Step 3. Explanation of the incorrect option

Option a is incorrect because the GC box is located in the promoter region of eukaryotes upstream of the TATA box.

Option c is incorrect because octamer binding proteins are highly conserved transcription factors not found in both prokaryotes and eukaryotes.

option d is incorrect because -10 and -35 sequences are found in prokaryotes only.

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Most popular questions from this chapter

In any given species, there are at least how many types of aminoacyl tRNA synthetases? a. 20 b. 40 c. 100 d. 200

15. A scientist identifies a pre-mRNA with the following structure.

What is the predicted size of the corresponding mature mRNA in base pairs (bp), excluding the 5’ cap and 3’ polyA tail?

a. 220bp

b. 295bp

c. 140bp

d. 435bp

Which feature of promoters can be found in both prokaryotes and eukaryotes?

a. GC box

b. TATA box

c. octamer box

d. -10 and -35 sequences

How do enhancers and promoters differ? a. Enhancers bind transcription factors to silence gene expression, while promoters activate transcription. b. Enhancers increase the efficiency of gene expression but are not essential for transcription. Promoter recognition is essential to transcription initiation. c. Promoters bind transcription factors to increase the efficiency of transcription. Enhancers bind RNA polymerases to initiate transcription. d. There is no difference. Both are transcription factor-binding sequences in DNA.

In any given species, there are at least how many types of aminoacyl tRNA synthetases? a. 20

b. 40

c. 100

d. 200
See all solutions

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