Ch 3.6 Gene Regulation

Question 1

Constitutive gene expression

Answer 1

Expressed continuously

( doesn’t mean height level of expression

Question 2

Operon

Answer 2

Usually only in pro

Set related coding sequences (make related proteins) share same promoter/ terminator

Single mRNA made from operon but multiple proteins can be produced

Question 3

Basal transcription

Answer 3

Small amount transcription

Never zero unless promoter destroyed

Question 4

Regulatory protein/operator

Answer 4

Protein: regulates expression gene/operon

Operator: where regulatory protein binds, anywhere near promoter

Question 5

Lac operon

Answer 5

LacI repressor is constitutively expressed

Can’t recruit with lactose

Question 6

Maltose operon

Answer 6

MalT activator is constitutively expressed

Can recruit pol with maltose