California State University, Fullerton » Biology » Biology 251 - Genetics » Spring 2021

Question #1

RNA is less stable than DNA because:

A. it has uracil instead of thymine.

B. it is single stranded.

C. it is translated.

D. it has an oxygen on the 2' carbon as a hydroxyl group.

Question #2

All of the following RNAs are involved in translation except:

A. snRNAs.

B. tRNAs.

C. rRNAs.

D. mRNAs.

Question #3

In a gene, the sense strand is the same as the template strand.

A. True

B. False

Question #4

A difference between replication and transcription is that transcription:

A. begins de novo by joining two free nucleoside triphosphates.

B. is made by copying a template.

C. reads the template strand 3' to 5'.

D. is polymerized 5' to 3'.

Question #5

In bacteria, transcription initiation occurs with the first step of:

A. binding of the RNA polymerase holoenzyme to the promoter consensus sequences.

B. opening of the transcription bubble so RNA polymerase can bind.

C. binding of the RNA polymerase core enzyme to the promoter consensus sequences.

D. binding of sigma factor to the promoter consensus sequences.