Question

1. How is the start codon identified in prokaryotic cells?

a. It is the only AUG on the mRNA strand.

b. It is the AUG after the Shine-Dalgarno sequence.

c. It is the AUG right next to the promoter on the mRNA.

d. It is the AUG after the Kozak sequence.

e. It is the AUG nearest the 5' end of the mRNA.

2. All of the following are true for eukaryotic transcription EXCEPT:

a. Transcription can be terminated when the Rho protein collides with RNA polymerase and the new mRNA is released.

b. Transcription can be terminated when the pre-mRNA is cut from the strand after the polyadenylation signal.

c. RNA polymerase II binds promoters that are upstream of protein-coding genes.

d. RNA polymerase builds the new RNA strand in the 5' to 3' direction.

e. Proteins called transcription factors bind to the promoter and help recruit RNA polymerase II.

3. Primase ________,

a. builds a DNA primer during DNA replication.

b. removes a DNA primer during DNA replication.

c. builds an RNA primer during transcription.

d. builds a DNA primer during transcription.

e. builds an RNA primer during DNA replication.

4. Select ALL of the following that accurately describe sister chromatids.

Select one or more:

a. Each comes from a different parent.

b. Are only present during G1.

c. Each contains a single DNA strand.

d. Are attached at the centromere.

e. Are identical.