AP Biology: Gene Regulation | 2.1K plays

1.

Multiple Choice

30 sec

1 pt

What does a promoter do?

it allows a gene (or genes) to be transcribed

it creates a DNA segment

it is another word for ribosomes

it is another word for RNA

2.

Multiple Choice

30 sec

1 pt

An operon consists of all the the following EXCEPT

operator

promoter

regulatory gene

genes of the operon (gene cluster)

3.

Multiple Choice

30 sec

1 pt

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

regulator

repressor

activator

corepressor

4.

Multiple Choice

30 sec

1 pt

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

promoter

repressor

operator

gene

5.

Multiple Choice

30 sec

1 pt

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

repressor

regulator

activator

corepressor

6.

Multiple Choice

30 sec

1 pt

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

corepressor

inducer

promoter

operator

7.

Multiple Choice

30 sec

1 pt

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

negative control

positive control

regular control

unleaded control

8.

Multiple Choice

30 sec

1 pt

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

positive

negative

"out of"

ground

9.

Multiple Choice

30 sec

1 pt

Two types of negative control are

repressible & inducible

repressible & active

active & inactive

repressible & corepressible

10.

Multiple Choice

30 sec

1 pt

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

presence

absence

11.

Multiple Choice

30 sec

1 pt

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

presence

absence

12.

Multiple Choice

30 sec

1 pt

All of the following are true about DNA methylation EXCEPT

takes place on the DNA

enzymes add a methyl group

when it occurs, transcription is more likely to occur

chromatin becomes more tightly packed

13.

Multiple Choice

30 sec

1 pt

All of the following are true about histone acetylation EXCEPT

takes place on the histone

enzymes add a acetyl group

when it occurs, transcription is more likely to occur

chromatin becomes more tightly packed

14.

Multiple Choice

30 sec

1 pt

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

epigenetic inheritance

differential gene expression

chromosomal inheritance

gene regulation

15.

Multiple Choice

30 sec

1 pt

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

transcription initiation complex

control element

activator

protein blobby thing

16.

Multiple Choice

30 sec

1 pt

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

transcription factors

topoisomerase

regulatory genes

activators

17.

Multiple Choice

30 sec

1 pt

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

enhancers

promoters

repressors

transcription factors

18.

Multiple Choice

30 sec

1 pt

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

alternative splicing

mRNA processing

repressor protein binds to operator

histone acetylation

19.

Multiple Choice

30 sec

1 pt

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

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

Prokaryotes use RNA polymerase to transcribe while eukaryotes use DNA polymerase

Prokaryotes have introns and eons while eukaryotes have only exons

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

20.

Multiple Choice

30 sec

1 pt

Which of the following is FALSE regarding eukaryotic gene regulation?

Activators bind to enhancers

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

The DNA bends to allow RNA polymerase to bind and transcribe

Operons can be either inducible or repressible

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