3 - Paull BIO 212 Problem Set#3(13 pts transcription/RNA...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Paull BIO 212 Problem Set #3 (13 pts) Due on Feb. 10/11 transcription/RNA modification/ translation 1. (2 pts) Recall that transcription of the lac operon in bacteria is negatively regulated by the lac repressor which recognizes the operator sequence in the promoter of the lac operon. The lac operon encodes several genes that are required for lactose metabolism. What happens when the cells are grown in lactose? A. The lac repressor binds allo-lactose and represses transcription by binding to the operator. B. The lac repressor binds allo-lactose and activates transcription by binding to the operator. C. The lac repressor binds allo-lactose and dissociates from the operator, thus repressing transcription. D. The lac repressor binds allo-lactose and dissociates from the operator, thus activating transcription. E. Nothing happens to the lac repressor when the cells are grown in lactose 2. (2 pts) “Gene X” encodes a 91 amino acid polypeptide, “protein X”. The stop codon for gene X is UAA. What would happen
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 2

3 - Paull BIO 212 Problem Set#3(13 pts transcription/RNA...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online