Genetics: Lac Operon Quiz 2

Question 1

2 out of 2 points

	What gene codes for the lac repressor? Answer
	Selected Answer: lacI

Question 2

2 out of 2 points

	Which type of molecule is lactose? Answer
	Selected Answer: disaccharide

Question 3

2 out of 2 points

	Which of the following describes a region of DNA? Answer
	Selected Answer: operator

Question 4

2 out of 2 points

	What is the name of the protein coded by lacI? Answer
	Selected Answer: C. repressor

Question 5

2 out of 2 points

	What is the name of the inducer of the lac operon? Answer
	Selected Answer: A. allolactose

Question 6

	What is the small molecule that signals the absence of glucose? Answer
	Selected Answer: A. cAMP

Question 7

2 out of 2 points

	What is the DNA element where the lac repressor binds? Answer
	Selected Answer: D. operator

Question 8

2 out of 2 points

	Which of the following does NOT describe an operon? Answer
	Selected Answer: a set of genes in an eukaryote

 

Question 9

2 out of 2 points

	Which gene codes for beta-galactosidase? Answer
	Selected Answer: E. lacZ