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Gene Regulation Review

Total questions: 15

Worksheet time: 4hrs 45mins

Name
Class
Date
1.
Most gene regulation happens at which step along the way?
a)
translation
b)
transcription
c)
signal transduction
d)
DNA replication
2.
Why are insertion and deletion mutations so harmful?
a)
They change all of the codons from the mutation on down the line, which changes the amino acid sequence
b)
They insert things that an organism doesn't need.
c)
They often delete things that organisms need.
d)
Insertion and deletions are not any more harmful than substitution mutations.
3.
Identify the SUBSTITUTION mutation from the following DNA sequence: 
ATG CCA AAT
a)
ATG TCA AAT
b)
ATG CCT AAA T
c)
ATC CA  AT
d)
ATG CCA AAT
4.
What is the name given to part of a DNA molecule that codes for a protein?
a)
Glucose
b)
Chromosome
c)
Gene
d)
Phosphate
5.
How can a person's muscle cells have the same exact DNA sequences as their nerve cells even though the look and perform completely different?
a)
The two different cells become mutated
b)
The proteins expressed in each cell are different
c)
They actually have different DNA in the two types of cells.
d)
The genome of the different cells changes
6.

What is synthesized to pass the DNA code to the ribosome?

a)

polymerase

b)

messenger RNA

c)

ligase

d)

ribosome

7.

A process called ____ uses the code carried by messenger RNA for protein synthesis.

a)

translation

b)

transcription

c)

unwinding

d)

elongation

8.

How many amino acids are coded for by this sequence of nucleotides:

ATG GGA ACT CCA

a)

4

b)

2

c)

6

d)

12

9.

Traits can be inherited or influenced by ______ factors, like the pH of the soil in Hydrangeas.

a)

environmental

b)

mutation

c)

variation

d)

genetic

10.

What causes mutations?

a)

Mutagens in the environment

b)

UV rays from the sun

c)

Gamma rays and X-rays

d)

All of the above.

11.

A mutation can be...

a)

harmful

b)

helpful

c)

neutral

d)

harmful, helpful, or benign(neutral)

12.

Transcription factors are responsible for

a)

turning genes on

b)

turning genes off

c)

turning genes both on and off

d)

stopping transcription

13.
Which form of RNA carries amino acids from the cytoplasm to the ribosome?
a)
amino RNA
b)
ribosomal RNA
c)
transfer RNA
d)
messenger RNA
14.
What type of bond holds together the two strands of the DNA double helix?
a)
Hydrogen Bond
b)
Peptide Bond
c)
Ionic Bond
d)
Disulfide Bond
15.

What type of gene mutation has occurred here?

Original DNA: T-G-A-C-C-A

Mutated DNA: T-G-A-C-C-A-A

a)

Substitution

b)

Deletion

c)

Insertion

d)

Silent

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