Test 2 - Quiz #5

Question 1

Mitochondrial genes are transcribed by ________.
A. RNA Polymerase 1
B. RNA Polymerase 2
C. RNA Polymerase 3
D. A separate mitochondrial RNA polymerase

Answer 1

D. A separate mitochondrial RNA polymerase

Question 2

The 1st step in the formation of transcription complex for mRNA transcription is the binding of \_\_\_\_\_ in the TATA box.
     A. TFIA (TF1A)
     B. TFIIA (TF2A)
     C. TFIIIA (TF3A)
     D. TFIID (TF2D)

Answer 2

D. TFIID (TF2D)

Question 3

DNA sequences that prevent enhancers from acting on promoters located in adjacent domains are called \_\_\_\_\_\_.
     A. Insulator
     B. Isolator
     C. Repressors
     D. Boundaries

Answer 3

A. Insulator

Question 4

Processing of RNA transcripts occurs ______.
A. Only in the eukaryotic cells
B. Only with mRNA transcripts
C. Only with rRNA and mRNA transcripts
D. With tRNA, rRNA and mRNA transcripts

Answer 4

D. With tRNA,rRNA and mRNA transcripts

Question 5

The role of sigma factor in prokaryotic transcription is to ______.
A. Unwind with DNA during transcription
B. Direct RNA polymerases to bind to different promoter regions
C. Recognize the transcription initiation site
D. Terminate transcription

Answer 5

B. Direct RNA polymerases to bind to different promoter regions