terms to know

Question 1

polycistronic

Answer 1

a single mRNA consisting of more than one coding region

Question 2

monocistronic

Answer 2

containing one coding region

Question 3

operon

Answer 3

cluster of genes that encode for specific biochemical pathways

Question 4

operator

Answer 4

a short region of DNA responsible for transcribing the operon

Question 5

lac operon

Answer 5

a cluster of genes that encodeto regulate the production of beta-galactosidase

Question 6

lac permease

Answer 6

transports lactose into the cell

Question 7

repressor protein

Answer 7

binds to specific DNA sequence that inhibits the transcription of a gene

Question 8

promoter

Answer 8

binds to RNA polymerase to promote the transcription of a gene

Question 9

lacz

Answer 9

codes for the protein beta-galactosidase

Question 10

lacY

Answer 10

codes for the protein lac permease-which is responsible for bringing lactose into the cell

Question 11

lacA

Answer 11

codes for the protein transacetylase

Question 12

substrate induction

Answer 12

the process by which RNA polymerase reads the subsequent gene due to presence a substrate(lactose) in the cell