Quiz about AP Biology: Gene Regulation

Question 1

What does a promoter do?

Accepted Answer

it allows a gene (or genes) to be transcribed

Answer

it creates a DNA segment

Answer

it is another word for ribosomes

Answer

it is another word for RNA

Question 2

An operon consists of all the the following EXCEPT

Accepted Answer

regulatory gene

Answer

operator

Answer

promoter

Answer

genes of the operon (gene cluster)

Question 3

A protein that binds to the operator and blocks the RNA polymerase

Accepted Answer

repressor

Answer

regulator

Answer

activator

Answer

corepressor

Question 4

The "on/off" switch for an operon is called the

Accepted Answer

operator

Answer

promoter

Answer

repressor

Answer

gene

Question 5

A small molecule that binds to a repressor and makes it ACTIVE is a

Accepted Answer

corepressor

Answer

repressor

Answer

regulator

Answer

activator

Question 6

A small molecule that binds to the repressor and makes it INACTIVE is a

Accepted Answer

inducer

Answer

corepressor

Answer

promoter

Answer

operator

Question 7

When something sticks to the DNA to turn off gene expression, this is considered:

Accepted Answer

negative control

Answer

positive control

Answer

regular control

Answer

unleaded control

Question 8

When a gene is transcribed when turned on by activator that sticks to DNA or changes the shape of a molecule already attached, it is considered _____ control

Accepted Answer

positive

Answer

negative

Answer

"out of"

Answer

ground

Question 9

Two types of negative control are

Accepted Answer

repressible & inducible

Answer

repressible & active

Answer

active & inactive

Answer

repressible & corepressible

Question 10

Inducible negative control is when the gene cluster is transcribed when there is the ____ of a specific molecule from a metabolic pathway.

Accepted Answer

presence

Answer

absence

Question 11

Repressible negative control is when the gene cluster is transcribed when there is the ____ of a specific molecule from a metabolic pathway.

Accepted Answer

absence

Answer

presence

Question 12

All of the following are true about DNA methylation EXCEPT

Accepted Answer

when it occurs, transcription is more likely to occur

Answer

takes place on the DNA

Answer

enzymes add a methyl group

Answer

chromatin becomes more tightly packed

Question 13

All of the following are true about histone acetylation EXCEPT

Accepted Answer

chromatin becomes more tightly packed

Answer

takes place on the histone

Answer

enzymes add a acetyl group

Answer

when it occurs, transcription is more likely to occur

Question 14

Inheritance of traits by mechanisms not directly involving nucleotide sequence is called

Accepted Answer

epigenetic inheritance

Answer

differential gene expression

Answer

chromosomal inheritance

Answer

gene regulation

Question 15

In eukaryotes, a cluster of proteins that assemble on the promoter is called the

Accepted Answer

transcription initiation complex

Answer

control element

Answer

activator

Answer

protein blobby thing

Question 16

In eukaryotes, proteins that help the RNA polymerase bind to the promoter for transcription

Accepted Answer

transcription factors

Answer

topoisomerase

Answer

regulatory genes

Answer

activators

Question 17

A distal control region that activators bind to are bent to contact mediator proteins and form the transcription initiation complex

Accepted Answer

enhancers

Answer

promoters

Answer

repressors

Answer

transcription factors

Question 18

Which of the following is NOT a way to change gene expression in eukaryotes?

Accepted Answer

repressor protein binds to operator

Answer

alternative splicing

Answer

mRNA processing

Answer

histone acetylation

Question 19

Which of the following is a CORRECT DIFFERENCE between prokaryotic gene expression and eukaryotic gene expression?

Accepted Answer

Prokaryotes make proteins relatively unmodified while eukaryotes can have significant post-translational modifications

Answer

Prokaryotes transcribe one gene at a time, eukaryotes transcribe gene clusters

Answer

Prokaryotes use RNA polymerase to transcribe while eukaryotes use DNA polymerase

Answer

Prokaryotes have introns and eons while eukaryotes have only exons

Question 20

Which of the following is FALSE regarding eukaryotic gene regulation?

Accepted Answer

Operons can be either inducible or repressible

Answer

Activators bind to enhancers

Answer

Transcription factors and mediators help all of the proteins bind into a complex

Answer

The DNA bends to allow RNA polymerase to bind and transcribe