Activities Quiz

Chapter Chapter 11: The Control of Gene Expression

Activities Quiz

1 .

The operon model of the regulation of gene expression in bacteria was proposed by _____. (Activity 11A) [Hint]

Watson and Crick

Franklin

Darwin

Jacob and Monod

Mendel

2 .

Which of these is NOT a component of the lac operon? (Activity 11A) [Hint]

lactose-utilization genes only

promoter only

regulatory gene only

operator only

promoter and operator

3 .

Regulatory proteins bind to _____. (Activity 11A) [Hint]

the operator

the lactose-utilization genes

the regulatory gene

RNA polymerase

transcription factors

4 .

In the presence of a regulatory protein the lac operon is _____. (Activity 11A) [Hint]

transcribed

not transcribed

transcribed at a faster than usual rate

turned on

either transcribed or not transcribed

5 .

Click on the diagram to start the animation. In this animation the blue sphere represents _____. (Activity 11A)

[Hint]

an active repressor

an inactive repressor

lactose

RNA polymerase

mRNA

6 .

Click on the diagram to start the animation. In this animation the orange object represents _____. (Activity 11A)

[Hint]

an active repressor

an inactive repressor

lactose

RNA polymerase

mRNA

7 .

Which of these is a regulatory gene? (Activity 11A)
question #

[Hint]

A

B

C

D

E

8 .

The letter A indicates _____. (Activity 11B)

question #1 [Hint]

supercoils

a nucleosome

a DNA double helix

histones

loops

9 .

Where would RNA polymerase attach? (Activity 11B)

question #2 [Hint]

A

B

C

A and B

B and C

10 .

The letter C indicates _____. (Activity 11B)

question #3 [Hint]

supercoils

a nucleosome

a DNA double helix

histones

loops

11 .

What is this an image of? (Activity 11B)

question #4 [Hint]

supercoils

a nucleosome

a DNA double helix

histones

loops

12 .

What is this an image of? (Activity 11B)

question #5 [Hint]

supercoils

a nucleosome

a DNA double helix

histones

loops

13 .

_____ bind(s) to DNA enhancer regions. (Activity 11B) [Hint]

RNA polymerase

Promoters

Introns

Activators

Exons

14 .

Click on the diagram to view the animation. What is the event that IMMEDIATELY follows the last event of this animation? (Activity 11B)

[Hint]

unbending of the DNA and the release of RNA polymerase from the promoter

binding of the activators to enhancers

transcription

binding of mRNA to the smaller ribosomal subunit

binding of RNA polymerase to the promoter

15 .

Which of these indicates an enhancer region? (Activity 11B)

question #15 [Hint]

A

B

C

D

C and D

16 .

Which of these directly bind(s) to the promoter? (Activity 11B)

question #16 [Hint]

A

B

C

D

C and D

17 .

How can a single RNA transcript lead to the translation of different proteins? (Activity 11B) [Hint]

The same RNA transcript may contain one of several different leaders.

The same RNA transcript may contain one of several different caps.

The same RNA transcript may be spliced in several different ways.

The same RNA transcript may contain one of several different promoters.

The same RNA transcript may contain one of several different trailers.

18 .

The process of transcription is indicated by the letter _____. (Activity 11C)

question #9 [Hint]

A

B

C

D

E

19 .

The letter E is indicating a process of gene expression that involves _____. (Activity 11C)

question #10 [Hint]

transcription

breakdown of mRNA

translation of mRNA

protein breakdown

unpacking of DNA

20 .

RNA processing is indicated by the letter _____. (Activity 11C)

question #11 [Hint]

A

B

C

D

E

21 .

Which of the following processes is NOT indicated by the label A, B, C, D, or E? (Activity 11C)

question #12 [Hint]

translation

RNA transcription

export of mRNA

DNA unpacking

RNA processing

22 .

A high concentration of "head" protein at the opposite ends of a developing Drosophila embryo would result in the development of a _____. (Activity 11D) [Hint]

two-headed fly

fly with a head growing out of its abdomen

fly with two abdomens

hermaphrodite

fly with legs growing out of its head

23 .

The "head" gene product is directly responsible for _____ in a developing Drosophila embryo. (Activity 11D) [Hint]

the establishment of the right-left axis

vulval development

flower development

the establishment of the anterior-posterior axis

programmed cell death

24 .

What triggers the translation of "head" mRNA? (Activity 11D) [Hint]

formation of the right-left axis of the developing embryo

fertilization of the egg

programmed cell death

capacitation of sperm

formation of the anterior-posterior axis of the developing embryo

25 .

The region of a Drosophila embryo with a low concentration of "head" protein will develop into the _____. (Activity 11D) [Hint]

abdomen

male flowers

thorax

head

female flowers

26 .

"Head" mRNA is translated in _____. (Activity 11D) [Hint]

Sertoli cells

the fertilized egg

sperm cells

chimera cells

nurse cells

27 .

Which of these regions is most likely to develop into the Drosophilia's head? (Activity 11D)

question 14 [Hint]

A

B

C

D

E

28 .

The "head" gene is transcribed by _____. (Activity 11D) [Hint]

a sperm cell

the zygote

the acrosome

nurse cells

embryonic cells

29 .

_____ is a carcinogen that promotes colon cancer. (Activity 11E) [Hint]

Fat

UV light

Estrogen

A virus

Testosterone