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Unit 4: Test Review

Total questions: 25

Worksheet time: 21mins

Name
Class
Date
1.

Thymine (T) bonds with ______________.

a)

Guanine

b)

Thymine

c)

Cytosine

d)

Adenine

2.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
3.
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
4.
In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of
a)
cytosine
b)
guanine
c)
thymine
d)
uracil
5.
Replicate the following strand of DNA: 
AATCATGGA
a)
AATCATGGA
b)
TTAGTACCT
c)
UUAGUACCU
d)
GGATAUCUA
6.
DNA replication results in two DNA molecules,
a)
each one with two original strands
b)
each one with two new strands
c)
each one with one new strand and one original strand
d)
one with two new strands and the other with two original strands
7.
order of replication
a)
3, 2, 1, 4
b)
2, 1, 4, 3
c)
2, 3, 1, 4
d)
3, 4, 1, 2
8.
A process in which DNA has the unique ability to make an exact copy of itself.
a)
Replication
b)
Translation
c)
Transcription
9.
In RNA, Uracil pairs with ______. 
a)
cytosine
b)
adenine
c)
guanine
d)
thymine
10.
Contains the bases adenine, uracil, cytosine and guanine
a)
DNA
b)
RNA
c)
Both
11.
How many amino acids are coded for by this sequence of nucleotides:
ATG GGA ACT CCA
a)
4
b)
2
c)
6
d)
12
12.

What does it mean for DNA to be semi-conservative?

a)

When copied, you end up with only one DNA molecule.

b)

When copied, DNA is completely different from the original DNA molecule.

c)

When copied, DNA is totally made from new bases.

d)

When copied, half of the DNA is from the original DNA and half from new bases.

13.
Which process is used to make mRNA from the DNA in the nucleus?
a)
transcription
b)
translation
c)
replication 
14.
Which RNA bases would pair with TACGAA in transcription
a)
AUGCUU
b)
ATGCTT
c)
GCATCC
d)
GCAUCC
15.
_______ is made during transcription and ________ is made during translation.
a)
mRNA / a protein
b)
a protein / mRNA
c)
Ribosome / Nucleus
d)
mRNA / tRNA
16.
If the percentage of DNA is made of 30% Thymine, what is the correct percentage of Guanine?
a)
30
b)
15
c)
20
d)
60
17.
When DNA is transcribed to RNA.... 
a)
A pairs with U
b)
C pairs with U
c)
A pairs with T
d)
C pairs with T
18.
What process is occurring in this photo?
a)
Transcription
b)
Translation
c)
mRNA is matching with amino acids
d)
tRNA is transcribing the DNA
19.
What is the correct amino acid sequence for the mRNA code AUGCCAGUAUGA?
a)
 Met-Pro-Val-Stop
b)
Met-Pro-Arg-Stop
c)
 Tyr-Gly-His
d)
Tyr-Gly-Arg-His
20.
Which phase of which process does this picture show?
a)
Transcription
b)
Translation
c)
Replication
21.

A type of mutation in which NO amino acids change is called?

a)

Missense

b)

Nonsense

c)

Silent

d)

Deletion

22.

mRNA is copied/created from?

a)

tRNA

b)

DNA

c)

RNA

d)

Protein

23.

This table shows percent similarities of various organisms. Which two organisms are the most closely related?

a)

1 and 4

b)

3 and 10

c)

8 and 9

d)

4 and 9

24.

In DNA (replication), A pairs with?

a)

A

b)

U

c)

T

d)

G

25.

Read this one!!!

A gamete is also called a 'sex cell'. Like sperm in males and eggs in females. If a baby is going to be BORN with a genetic defect (like down syndrome), what MUST happen?

a)

A mutation must happen to the baby 2 weeks after it is born.

b)

A mutation must happen within the parents gametes, before the baby is conceived/made.

c)

A mutation occurs in the parents brain cells, causing them to change as well as their children.

d)

No mutation happens, the baby just has complications at birth.