Chapter 18

Question 1

Site where RNA polymerase can bind to DNA and begin transcription

Answer 1

Promoter

Question 2

Controls the access of RNA polymerase to the genes

Answer 2

Operator

Question 3

Entire stretch of DNA required for enzyme production

Answer 3

Operon

Question 4

Binds to operator and blocks attachment of RNA polymerase to the promoter

Answer 4

Repressor

Question 5

Gene that codes for a protein like a repressor that controls the transcription of another gene or group of genes

Answer 5

Regulatory genes

Question 6

Can be stimulated when a specific small molecule interacts with a regulatory protein; off and can be turned on

Answer 6

Inducible operon

Question 7

Can be inhibited when a specific small molecule binds allosterically to a regulatory protein; on and can be turned off

Answer 7

Repressible operon

Question 8

Attachment of acetyl groups to certain amino acids of histone proteins

Answer 8

Histone acetylation

Question 9

Adding methyl groups on DNA bases; turns off genes

Answer 9

DNA methylation

Question 10

Methylation permanently regulates expression of either the maternal or paternal allele of particular genes at the start of development

Answer 10

Genomic imprinting