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Review for unit exam

Total questions: 76

Worksheet time: 2hrs 45mins

Name
Class
Date
1.

During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases:

a)

AGCTTG

b)

GATCCA

c)

TCGAAC

d)

GAUCCA

2.

In both prokaryotes and eukaryotes, DNA replication happens

a)

before cell division.

b)

in the nucleus

c)

only to telomeres

d)

around the histones

3.

What nucleotide is going to be opposite from thymine?

a)

adenine

b)

cytosine

c)

guanine

d)

uracil

4.

During replication, what enzyme is responsible for building the complementary strand?

a)

histones

b)

nucleosomes

c)

DNA polymerase

d)

chromatin

5.

In eukaryotes, DNA

a)

is located in the nucleus

b)

floats freely in the cytoplasm

c)

is located in the ribosomes

d)

is circular

6.

What type of sugar is in DNA?

a)

glucose

b)

lactose

c)

deoxyribose

d)

ribose

7.

Which of the following forms a base pair with guanine?

a)

uracile

b)

cytosine

c)

thymine

d)

adenine

8.

Which of the following is a nucleotide found in DNA?

a)

ribose + phosphate group + thymine

b)

ribose + phosphate group + uracil

c)

deoxyribose + phosphate group + uracil

d)

deoxyribose + phosphate group + cytosine

9.

What type of bonds hold the two nitrogen base pairs together in the middle of DNA?

a)

ionic

b)

polar

c)

hydrogen

d)

covalent

10.

Which enzyme proofreads the new strands to make sure they are a copy of the original?

a)

DNA polymerase

b)

DNA amylase

c)

DNA primase

d)

DNA ligase

11.

To begin DNA replication, we first need to unzip the double helix ladder of DNA. What enzyme is responsible for unzipping the DNA strands?

a)

histones

b)

DNA helicase

c)

DNA polymerase

d)

chromatin

12.
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
13.
Nitrogenous bases are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
14.
order of replication
a)
3, 2, 1, 4
b)
2, 1, 4, 3
c)
2, 3, 1, 4
d)
3, 4, 1, 2
15.
Seals the Okazaki fragments together
a)
DNA Polymerase
b)
ligase
c)
helicase
d)
primase
16.

How do the leading and the lagging strands differ?

a)

The leading strand is synthesized in the same direction as the movement of the replication fork, and the lagging strand is synthesized in the opposite direction.

b)

The leading strand is synthesized at twice the rate of the lagging strand.

c)

The leading strand is synthesized in short fragments that are ultimately stitched together, whereas the lagging strand is synthesized continuously.

d)

The leading strand is synthesized by adding nucleotides to the 3' end of the growing strand, and the lagging strand is synthesized by adding nucleotides to the 5? end.

17.
What is meant by the description "antiparallel" regarding the strands that make up DNA?
a)
The twisting nature of DNA creates nonparallel strands.
b)
One strand is positively charged and the other is negatively charged.
c)
The 5' to 3' direction of one strand runs counter to the 5' to 3' direction of the other strand.
d)
Base pairings create unequal spacing between the two DNA strands
18.
What is meant that DNA replication follows a “semi-conservative” model?
a)
After DNA replication, each strand contains one side that is a parental strand and the other side is a daughter strand.
b)
After DNA replication, one completed strand contains only parental DNA while the other contains only daughter DNA.
c)
None of these identify the “semi-conservative” model.
d)
After DNA replication, one completed strand contains a mixture of both parental DNA and daughter DNA dispersed throughout the strand.
19.
Which sequence of DNA bases would pair with this partial strand of DNA: ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
20.
The genetic material of an organism is composed of
a)
lipids
b)
proteins
c)
Deoxyribonucleic acid
d)
complex carbohydrates
21.
DNA contains the code for constructing which molecules?
a)
proteins
b)
starches
c)
fats
d)
sugars
22.
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
23.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
24.
Name this structure
a)
amino acid
b)
nucelotide
c)
ATP
d)
Protein
25.
Nucleotides are made up of a sugar, phosphate, and..?
a)
nitrogenous base
b)
nucleic acid
c)
cholesterol
d)
fatty acid
26.
Who discovered the "base pairing rules"?
a)
Watson & Crick
b)
Rosalind Franklin
c)
Erwin Chargaff
d)
Blob Fish
27.
Where does DNA replication take place?
a)
Nucleus
b)
Ribosome
c)
Cytoplasm
d)
Golgi Body
28.
Which type(s) of cells contain DNA
a)
plant cells
b)
animal cells
c)
bacteria cells
d)
all cells
29.
Watson and Crick were the first to suggest that DNA is _____
a)
a short molecule
b)
the shape of a double helix
c)
a protein molecule
d)
the genetic material
30.
Replicate the following strand of DNA: 
AATCATGGA
a)
AATCATGGA
b)
TTAGTACCT
c)
UUAGUACCU
d)
GGATAUCUA
31.

The building blocks of DNA is

a)

Sugar

b)

Phosphate

c)

Nucleotide

d)

Muskrat

32.

Which of the these bases are the Purines

a)
b)
c)
d)
33.

Which bases are the Pyrimidines

a)
b)
c)
d)
34.

If there is 22% Cytosine, how much of all the other bases are there?

a)

22% C, 22% G, 28% A, and 28%T

b)

28% C, 28% G, 28% A, and 28%T

c)

22% C, 28% G, 22% A, and 28%T

d)

22% C, 22% G, 22% A, and 22%T

35.

How many nucleotide bases are there?

a)

1

b)

2

c)

6

d)

4

36.

What is the DNA compliment of this sequence?

AGGCGA

a)

TCCGCT

b)

AGGCGA

c)

TCCTTA

37.

What is the DNA compliment of this sequence?

GCAATCA

a)

CGTTAGT

b)

CGAAATC

c)

CGTTTAG

38.

Which letter pairs with - T

a)

C

b)

A

c)

G

39.

What is the mRNA complement to the following strand?


TTT-ATC-GAG-CGT

(a)  

40.

In what process is mRNA synthesized?

a)

Transcription

b)

Translation

c)

DNA Replication

d)

Mitosis

41.
The mRNA leaves the ________ to find the ribosome to make proteins.
a)
cell
b)
nucleotide
c)
nucleus
42.

Why must transcription occur in the nucleus?

a)

because DNA can't leave the nucleus

b)

because ribosomes are in the nucleus

c)

because DNA polymerase is found there

d)

because helicase unzips the DNA

43.

Choose the sequence of the mRNA strand that would match up with to the following DNA strand:

GTACAT

a)

CATGTA

b)

GAUCUA

c)

CAUGUA

d)

CUTGTU

44.

How many nucleotides code for 1 amino acid?

a)

1

b)

2

c)

3

d)

4

45.

When these bond together, they form a protein

a)

Amino Acids

b)

Peptide Bonds

c)

Ribose

d)

Nucleotides

46.
The process to go from mRNA to a protein is called ____
a)
transcription
b)
rRNA
c)
replication
d)
translation
47.

Which process does this diagram illustrate?

a)

transcription

b)

DNA replication

c)

translation

48.

What determines the shape and function of a protein?

a)

The sequence of amino acids

b)

The type of ribosome that assembles the protein

c)

The cell that manufactures the protein

49.

True or False: mRNA contains anticodons and tRNA contains codons.

a)

True

b)

False

50.
Which of the following bases is found only in RNA?
a)
Adenine
b)
Guanine
c)
Thymine
d)
Uracil
51.

A short sequence of nucleotides reads GGACAGAGCGCAGACGA. In which type of molecule could this sequence be found?

a)

DNA molecule only

b)

RNA molecule only

c)

Both in a DNA and an RNA molecule

d)

In double-stranded DNA only

52.

For which discovery about DNA do Watson and Crick receive credit?

a)

DNA is the molecule that genes are made of.

b)

The amount of adenine equals the amount of thymine in an organism.

c)

Phosphate–pentose bonding along the nucleotide backbone is covalent.

d)

The shape of DNA is a double helix.

53.

The base sequence of a fragment of DNA is:


ACC GTG CAG GAT


What is the base sequence on the messenger RNA (mRNA) molecule transcribed from it?

a)

TGG CAC GTC CTA

b)

TGG CUC GTC CTU

c)

UGG CTC GUC CUT

d)

UGG CAC GUC CUA

54.

What is the sequence of the amino acids that is being translated from the following mRNA sequence?


5' AUGGGUGCUUAUUGGUAA 3'

a)

Met-Pro-Arg-Ile-Thr

b)

Met-Cys-Ser-Tyr-Trp

c)

Met-Gly-Ala-Tyr-Trp

d)

Met-Gly-Tyr-Ala-Thr

55.

What is the function of RNA polymerase?

a)

Adds DNA nucleotides to the 3' end of a growing strand

b)

Adds RNA nucleotides to the 3' end of a growing strand

c)

Adds DNA nucleotides to the 5' end of a growing strand

d)

Adds RNA nucleotides to the 5' end of a growing strand

56.
The anticodon of a particular tRNA molecule is 
a)
complementary to the corresponding mRNA codon.
b)
complementary to the corresponding triplet in rRNA.
c)
the part of tRNA that bonds with a specific amino acid.
d)
catalytic, making the tRNA a ribozyme.
57.
The genetic code is essentially the same for all organisms. From this, one can logically assume which of the following?
a)
The same codons in different organisms translate into the different amino acids.
b)
A gene from an organism can theoretically be expressed by any other organism.
c)
All organisms have experienced convergent evolution.
d)
DNA was the first genetic material.
58.
What is the amino acid sequence for the following:
GGG GCA CAT CAC
a)
Gly-Ala-His-His
b)
Tyr-Arg-Val-Val
c)
Pro-His-Val-Val
d)
Pro-Arg-Val-Val
59.
What is the complementary RNA sequence for the following:
ATC AAT CGT TAG
a)
TAG TTA GCA ATC
b)
UAG UUA GCA AUC
c)
AUC AAU CGU UAG
d)
GCT GGC TAC CGA
60.
Translate the following RNA sequence:
AUG AAU UGU UGA
a)
Met-Phe-Cys-Stop
b)
Met-Asn-Cys-Stop
c)
Met-Asn-Cys-Trp
d)
Tyr-Leu-Thr-Thr
61.
Transcribe the following DNA sequence:
TAT GGC ACT 
a)
TAT GGC ACT
b)
ATA CCG TGA
c)
AUA GGC UGA
d)
UAU GGC ACU
62.
A certain gene codes for a polypeptide that is 120 amino acids long. Approximately how many nucleotides long is the mRNA that codes for this polypeptide likely to be?
a)
360
b)
480
c)
40
d)
30
63.
What is the corresponding codon for AGT?
a)
UCA
b)
TCA
c)
UGA
d)
ACU
64.

The process represented in the diagram produces a molecule that is complementary to the template strand of DNA. What type of molecule is produced?

a)

new DNA

b)

polypeptide

c)

messenger RNA

d)

carbohydrate

65.

Which of the following is true regarding the process shown?

a)

The process shown above is known as transcription and involves the production of proteins from DNA.

b)

The process shown above is known as replication and involves the production of DNA from RNA.

c)

The process shown above is known as cloning and involves the production of RNA from protein molecules.

d)

The process shown above is known as translation and involves the production of proteins from RNA.

66.

Protein Synthesis is…

a)

Transcription and translation

b)

The process of duplicating DNA

c)

Where DNA is copied to mRNA in the nucleus

d)

Where mRNA is read to make a protein at the ribosome

67.
In RNA, Uracil pairs with ______. 
a)
cytosine
b)
adenine
c)
guanine
d)
thymine
68.
The main function of tRNA is to...
a)
carry a message that, when translated, forms proteins
b)
form a portion of ribosomes
c)
string together complementary RNA and DNA strands
d)
bring amino acids from the cytoplasm to the ribosomes
69.
What amino acid is represented by the codon UUA?
a)
Phenylalanine
b)
Tyrosine
c)
Leucine
d)
Stop codon
70.
What is the three base sequence of mRNA that codes for a single amino acid?
a)
Anticodon
b)
Codon
c)
Protein
71.
Contains the bases adenine, uracil, cytosine and guanine
a)
DNA
b)
RNA
c)
Both
72.
The diagram shows the process of
a)
Transcription
b)
Translation
c)
Replication
d)
Mitosis
73.

What type of RNA carries amino acids?

a)

Messenger

b)

Ribosomal

c)

Transfer

74.

What type of RNA carries genetic information?

a)

Messenger

b)

Ribosomal

c)

Transfer

75.

What does RNA stand for?

(a)  

76.

What is the chain of amino acids called?

(a)  

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