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Flashcards in Chapter 15 Study Notes Deck (20)
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1

The region containing the RNA polymerase, the DNA template, and the growing RNA transcript is called the

Transcription bubble

2

The universality of the genetic code is evidence for which of the following?

Common evolutionary heritage

3

Transcription and translation of an mRNA molecule occur simultaneously in

prokaryotes

4

How many RNA polymerases are found in prokaryotes (please answer by only entering a number)?

1

5

In a bacterial transcription unit, the role of the _____ is to form a recognition and binding site for the RNA polymerase.

promoter

6

RNA polymerase ______ is responsible for transcribing the mRNA from eukaryotic structural genes.

II

7

Before it can bind to the promoter, a eukaryotic RNA polymerase II has to be recruited by

Several transcription factors

8

In prokaryotes how do translation and transcription occur?

They are coupled

9

RNA polymerase I transcribes

rRNA

10

RNA polymerase II transcribes

mRNA

11

RNA polymerase III transcribes

tRNA

12

In the transcription elongation complex of eukaryotes, what is the function of the CTD?

It acts as a platform, which recruits elongation factors and RNA-modifying enzymes

13

The poly-A tail of most mature eukaryotic mRNAs is found

at the 3' end of the transcript

14

True or false: Eukaryotic transcripts are not modified after transcription.

False

Reasoning: Eukaryotic transcripts can be modified with a 5' cap or 3' poly-A tail

15

In the transcription elongation complex of eukaryotes, what is the CTD made of?

It consists of 7 amino acids repeated many times.

16

The noncoding DNA sequences in a gene are termed which of the following?

Introns

17

In prokaryotes how do translation and transcription occur?

They are coupled

18

Most mature eukaryotic mRNAs have a string of nucleotides referred to as a poly-Input Field 1 of 1 A unavailable correct ______ tail.

A

19

To create a functional RNA, the pre-mRNA undergoes a process known as splicing. During the splicing process, the _____ are removed and the remaining ______ are connected to each other.

Introns
Exons

20

The start codon of an mRNA specifies which of the following amino acids?

Methionine