Review the animation and answer the questions that follow to test your understanding.

1		When glucose is present
			A)	cyclic AMP is high, the catabolite activator protein (CAP) binds to the activator binding site, and transcription of lactose is turned on
			B)	cyclic AMP is low, CAP binds to the site activator binding site, and transcription of lactose is turned on
			C)	cyclic AMP is high, CAP does not bind to the activator binding site, and transcription of lactose is turned on
			D)	cyclic AMP is low, CAP does not bind to the activator binding site, and transcription is turned off
2		The lac repressor
			A)	binds to the operator and prevents transcription
			B)	binds to the CAP site and prevents transcription
			C)	binds to the CAP site and facilitates transcription
			D)	binds to the operator and facilitates transcription
3		When both glucose and lactose are present
			A)	cyclic AMP is high so transcription occurs
			B)	the lac repressor binds with the lactose and transcription occurs
			C)	RNA polymerase is able to bind to the operator so transcription occurs
			D)	transcription is turned off
4		In the absence of glucose, when lactose is present it combines with the repressor, allowing RNA polymerase to carry on transcription.
			A)	True
			B)	False
5		When both glucose and lactose are absent, transcription occurs.
			A)	True
			B)	False