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Worksheets

Molecular genetics Test Review

Total questions: 180

Worksheet time: 7hrs 46mins

Name
Class
Date
1.
Which organelle is the site of protein synthesis?
a)
Ribosome
b)
Lysosome
c)
Vacuole
d)
Mitochondrion
2.
Which organelle is responsible for the "rough" look of the endoplasmic reticulum?
a)
Lysosome
b)
Ribosome
c)
Golgi apparatus
d)
Plasma membrane
3.
If a toxic chemical destroys the ribosomes, which cellular activity would be affected first?
a)
Energy storage
b)
DNA synthesis
c)
Movement
d)
Protein production
4.
Amino acids link together by peptide bonds to form proteins.  In which organelle would this occur?
a)
Lysosme
b)
Ribosome
c)
Gogli
d)
Nucleus
5.
What is an example of a nucleic acid?
a)
Collagen
b)
A sweet potato
c)
Vegetable oil
d)
A strand of DNA
6.
Which organic macromolecules are composed of chains of amino acids that join to form the structural components of organisms?
a)
carbohydrates
b)
nucleic acids
c)
proteins
d)
lipids
7.
Which of these substances stores and transmits the information that specifies the traits of an organism?
a)
DNA
b)
RNA
c)
enzymes
d)
carbohydrates
8.
Which of these substances stores and transmits the information that specifies the traits of an organism?
a)
DNA
b)
RNA
c)
enzymes
d)
carbohydrates
9.
A strand of DNA with the sequence A-C-T-T-G serves as a template to form a strand of mRNA with the sequence U-G-A-A-C.  During which process would this happen?
a)
replication
b)
transcription
c)
translation
d)
meiosis
10.
Proteins are formed in the cytoplasm of cell using genetic instructions from DNA, which is located in the cells nucleus.  Which of the following best explains how the genetic information gets to the site of protein synthesis?
a)
DNA is divided during mitosis, and one strand travels outside the nucleus to bind with RNA and form a protein
b)
DNA is copied to make mRNA. The mRNA leaves the nucleus and goes to the ribosomes, where the information is used to guide protein synthesis.
c)
Genetic information travels from DNA in the nucleus along a strand of mRNA that is connected to ribosomes in the cytoplasm where proteins are made.
d)
The genetic code is transferred to ribosomes on tRNA molecules, which can pass through the nuclear membrane.
11.
The diagram shows the base sequence of a strand of DNA.
From left to right, what is the sequence of the complementary strand of DNA in this molecule?
a)
T G A A C
b)
A C T  T G
c)
T G U U C
d)
U C T T G
12.
The table shows several DNA codons and their corresponding amino acids.
If a sequence of DNA reads AGTGGGTCT, for what sequence of amino acids does it code?
a)
arginine-glycine-serine
b)
serine-arginine-arginine
c)
serine-arginine-glycine
d)
serine-glycine-serine
13.
Which cell structures are correctly paired with their functions?
a)
the mitochondria produces enzymes, and ribosomes transport them
b)
the ribosomes make proteins, and the nucleus stores genetic information
c)
the cell membrane makes enzymes, and cytoplasm transports them
d)
the vacuole stores genetic information and chloroplast make proteins
14.
What factor would cause two specialized tissues that contain identical chromosomes to function differently?
a)
Specific sections fo the DNA molecules in the chromosomes are activated
b)
All of the sections of DNA molecules in the chromosomes are activated
c)
Specific sections of the amino acid molecules in the cytoplasm are activated
d)
All of the amino acid molecules in the cytoplasm are activated
15.
A shortage of phosphorus in the soil would make it difficult to manufacture __.
a)
DNA
b)
fatty acids
c)
proteins
d)
sucrose
16.
A mutant bacterial strain without ribosomes would be incapable of producing ___.
a)
cellulose
b)
amylase
c)
DNA
d)
phospholipids
17.
An unknown molecule contains a sugar and a phosphate group. It is likely what?
a)
carbohydrate
b)
protein
c)
lipid
d)
nucleic acid
18.
Which macromolecule is shown?
a)
lipid
b)
protein
c)
nucleic acid
d)
carbohydrate
19.
Where are proteins made in the cell? 
a)
Golgi body
b)
mitochondrion
c)
nucleus
d)
ribosomes
20.
Function of this organelle?
a)
protein synthesis
b)
transport proteins
c)
modify, package, and ship proteins
d)
storage of water, food or wastes
21.
In RNA, Uracil pairs with ______. 
a)
cytosine
b)
adenine
c)
guanine
d)
thymine
22.
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
23.
What amino acid is represented by the codon UUA?
a)
Phenylalanine
b)
Tyrosine
c)
Leucine
d)
Stop codon
24.
What process is going on in this photo? 
a)
Transcription 
b)
Translation 
c)
Replication 
d)
All the above 
25.
What is the correct amino acid sequence for the mRNA code AUGCCAGUAUGA
a)
Met-Pro-Ala-Val
b)
Met-Pro-Val
c)
Tyr-Gly-His
d)
Tyr-Gly-Arg-His
26.

The process represented in the diagram above produces a molecule that is single-stranded and has copied nucleotide sequences from the template strand of DNA. What type of molecule is produced in this process?

a)

New DNA

b)

Polypeptide

c)

mRNA

d)

Carbohydrate

27.
How would the DNA sequence GCTATA be transcribed to mRNA?
a)
GCUAUA
b)
CGATAT
c)
CGAUAU
d)
GCUTUT
28.
The process by which the genetic code of DNA is copied into a strand of RNA is called
a)
translation
b)
transcription
c)
transformation
d)
replication
29.

A diagram of a cellular process is shown below. Which of the following identifies the process shown at point Z?

a)

Translation

b)

Mutation

c)

Replication

d)

Transcription

30.

During transcription, the DNA base sequence is transcribed into an mRNA sequence. A codon chart like the one shown below lists the amino acids coded for by particular triads of mRNA bases. A segment of DNA has undergone a mutation in which one nucleotide has been changed. The original sequence was ATA, and the mutated sequence is ATG. Use the codon table to determine whether or not this mutation will cause a change in the protein of the organism.

a)

Yes, the protein of the organism would change because a new amino acid will be coded for.

b)

Yes, the protein of the organism would change because changes in the DNA sequence will always cause a change in proteins.

c)

Even though the DNA sequence changed, the sequence still codes for the same amino acid, so no change in the protein will occur.

d)

It is impossible to determine if a change in proteins will occur using only the DNA sequence.

31.

A student constructed a model to illustrate some of the processes involved in the production of proteins in a eukaryotic cell.

Which statement correctly describes the structure and activity identified by the letter X?

a)

A tRNA molecule reacts with an amino acid to produce ribosomal RNA.

b)

A tRNA molecule transports an amino acid for incorporation into a polypeptide.

c)

An rRNA molecule carries an amino acid away from the site of protein synthesis.

d)

An mRNA molecule transports a single amino acid to the site of protein synthesis.

32.

This diagram represents part of the process of translation. One tRNA molecule has transported the amino acid methionine (met) to the mRNA. Another tRNA molecule has transported the amino acid tryptophan (trp) to the mRNA.


Which step is next during translation?

a)

The tRNA will attach to nucleotides in the cytoplasm.

b)

A peptide bond will form between the two amino acids.

c)

The mRNA carrying the amino acids will drop off the ribosome.

d)

The amino acids will be carried to the Golgi apparatus for packaging.

33.
A shortage of phosphorus in the soil would make it difficult to manufacture __.
a)
DNA
b)
fatty acids
c)
proteins
d)
sucrose
34.
An unknown molecule contains a sugar and a phosphate group. It is likely what?
a)
carbohydrate
b)
protein
c)
lipid
d)
nucleic acid
35.
Which macromolecule is shown?
a)
lipid
b)
protein
c)
nucleic acid
d)
carbohydrate
36.
The bond that joins amino acids are called:
a)
Peptide Bonds
b)
Ester Bonds
c)
Glycosidic Linkages
d)
Phosphodiester Bonds
37.
Where are proteins made in the cell? 
a)
Golgi body
b)
mitochondrion
c)
nucleus
d)
ribosomes
38.
Function of this organelle?
a)
protein synthesis
b)
transport proteins
c)
modify, package, and ship proteins
d)
storage of water, food or wastes
39.
In RNA, Uracil pairs with ______. 
a)
cytosine
b)
adenine
c)
guanine
d)
thymine
40.

Amino acids are the building blocks of which macromolecule?

a)

DNA

b)

Liquid

c)

Protein

d)

Carbohydrate

41.

Which of the following organic molecules is composed of chains of amino acids?

a)

proteins

b)

carbohydrates

c)

lipids

d)

nucleic acids

42.

Which of the following gives the correct terms?

a)

Definition A: transcription; Definition B: translation

b)

Definition A: translation; Definition B: transcription

c)

Definition A: telophase; Definition B: prophase

d)

Definition A: prophase; Definition B: telophase

43.

The processes defined above are the the two stages of which critical life function?

a)

protein synthesis

b)

osmosis

c)

aerobic respiration

d)

photosynthesis

44.
Which two cell structures work together in the process of protein synthesis?
a)
nucleus and chloroplast
b)
ribosome and vacuole
c)
nucleus and ribosome
d)
mitochondria and cell membrane
45.
DNA & RNA are which of the following?
a)
Nucleic Acids
b)
Amino Acids
c)
Proteins
d)
Carbohydrates
46.
Where does translation (protein synthesis) occur?
a)
nucleus
b)
ribosome
c)
chloroplast
d)
mitochondria
47.
The inability of an organism to produce certain proteins can occur when an organism is lacking an enzyme needed to combine
a)
oxygen molcules
b)
simple sugars
c)
amino acids
d)
biological catalyts
48.

Which of the following are differences in the structure between RNA and DNA, choose all that apply

a)

DNA uses deoxyribose sugar, RNA uses sugar ribose

b)

DNA pairs Adenine with Uracil, RNA pairs Adenine with Thymine

c)

DNA is a double helix, RNA is a single helix

d)

DNA pairs Adenine with Thymine, RNA pairs Adenine with Uracil

49.

Which organelle is the location where protein is made?

a)

Ribosome

b)

Nucleus

c)

Cytoplasm

d)

Nucleotide

50.

During transcription, this type of ribonucleic acid is responsible for copying the DNA and brining it out of the nucleus.

a)

tRNA

b)

mRNA

c)

rRNA

d)

dRNA

51.

When these bond together, they form a protein

a)

Amino Acids

b)

Peptide Bonds

c)

Ribose

d)

Nucleotides

52.

These building blocks consist of a sugar, phosphate, and nitrogen base.

a)

Ribose

b)

Nucleotide

c)

Gene

d)

Protein

53.

A string of nucleotides that contain the information to make a specific protein

a)

Ribose

b)

Amino Acids

c)

tRNA

d)

Gene

54.

During translation, this type of ribonucleic acid is responsible for delivering amino acids to help make a protein.

a)

mRNA

b)

rRNA

c)

tRNA

d)

dRNA

55.

There are a total of ____ different amino acids

a)

20

b)

1

c)

4

d)

unlimited

56.

mRNA occurs during this process

a)

Translation

b)

Transcription

c)

Replication

d)

Delivery

57.

How many amino acids are found on one tRNA?

a)

20

b)

4

c)

1

d)

3

58.

Which of the following is the complementary mRNA sequence to this DNA strand: AAC TGA

a)

UUG ACU

b)

TTG ACT

c)

AAC TGA

d)

AAC UGA

59.

Which of the following is the tRNA that will be used to decode to this DNA strand: AAC TGA

a)

AAC and TGA

b)

TTG and ACT

c)

UUG and ACU

d)

AAC and UGA

60.
Which of the following is the template for the production of RNA within a cell?
a)
DNA
b)
protein
c)
ATO
d)
carbohydrate
61.
which process is shown?
a)
diffusion
b)
repiration
c)
recombination
d)
translation
62.
What is the relationship between a protein, the cell, and DNA?
a)
DNA is produced by protein which is produced in the cell
b)
Protein is composed of DNA which is produced in the cell
c)
DNA controls the production of protein in the cell
d)
A cell is composed of DNA and protein
63.
Genetic info flows in one direction. Which best represents this flow?
a)
DNA-protein-RNA
b)
Protein-RNA-DNA
c)
RNA-protein-DNA
d)
DNA-RNA-protein
64.
Which process?
a)
mutation
b)
transcription
c)
respiration
d)
translation
65.
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
66.
What is the term for a three-nucleotide sequence that codes for an amino acid?
a)
base
b)
codon
c)
amine
d)
serine
67.
Which phrase best describes translation?
a)
converts mRNA into a polypeptide
b)
catalyzes bonds between amino acids
c)
produces RNA from DNA molecules
d)
recycles tRNA molecules for reuse
68.
Which of the following is the site of transcription?
a)
vacuole
b)
lysosome
c)
nucleus
d)
ribosome
69.
Which of the following is the site of translation?
a)
vacuole
b)
lysosome
c)
nucleus
d)
ribosome
70.
The process to go from DNA to mRNA is _______
a)
translation
b)
transcription
c)
replication
71.
The process to go from mRNA to a protein is called ____
a)
transcription
b)
rRNA
c)
replication
d)
translation
72.
What amino acid is represented by the codon UUA?
a)
Phenylalanine
b)
Tyrosine
c)
Leucine
d)
Stop codon
73.
Does the order of amino acids in a protein matter?
a)
YES!
b)
NO!
74.
In a strand of DNA, if it contains 20% of Thymine, then how much Guanine would be present?
a)
30%
b)
20%
c)
80%
d)
10%
75.
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
76.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
77.
Which of the following units are repeatedly joined together to form a strand of DNA?
a)
amino acids
b)
nucleotides
c)
fatty acids
d)
polysaccharides
78.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
79.
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
80.
Why is DNA important?
a)
it is very small and very complicated
b)
it's in everything
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
81.
What determines the code, or information, of a DNA molecule?
a)
the shape (structure) of the nitrogen bases
b)
the order (sequence) of the nitrogen bases
c)
the color of the nitrogen bases
d)
the frequency (number) of nitrogen bases
82.
Which 2 molecules form the sides (backbone) of the DNA ladder?
a)
deoxyribose sugar and adenine
b)
deoxyribose sugar and a hydrogen bond
c)
deoxyribose sugar and the nucleus
d)
deoxyribose sugar and phosphate
83.
What are the three components of a nucleotide?
a)
sugar, hydrogen, nitrogen base
b)
sugar, oxygen, nitrogen base
c)
sugar, phosphate, nitrogen base
d)
sugar, phosphate, protein
84.
A process in which DNA has the unique ability to make an exact copy of itself.
a)
Replication
b)
Translation
c)
Transcription
85.
Nitrogenous bases are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
86.
The following picture must be
a)
DNA because it's double stranded
b)
RNA because it's single stranded
c)
DNA because it's single stranded
d)
RNA because it's double stranded
87.
Which two scientists are accredited with correctly deducing the double helix model of DNA?
a)
Watson and Crick
b)
Wilkins and Franklin
c)
Wilkins and Crick
d)
Watson and Franklin
88.
What does this picture represent?
a)
amino acid
b)
base pairing
c)
nucleotide
d)
the DNA molecule
89.

In DNA, adenine pairs with?

a)

Cytosine

b)

Guanine

c)

Adenine

d)

Thymine

90.

Cytosine pairs with?

a)

Thymine

b)

Adenine

c)

Cytosine

d)

Guanin

91.

Guanine pairs with?

a)

Adenine

b)

Thymine

c)

Gaunine

d)

Cytosine

92.

Thymine pairs with?

a)

Thymine

b)

Adenine

c)

Guanine

d)

Cytosine

93.

In RNA, adenine pairs with?

a)

Adenine

b)

Thymine

c)

Uracil

d)

Guanine

94.

What is the complementary strand of DNA for GAT?

a)

TAG

b)

CTA

c)

CAT

d)

AGT

95.

What type of bonds hold two strands of DNA together to make a double helix?

a)

Ionic bonds

b)

Polar bonds

c)

Hydrogen bonds

d)

Nitrogen bonds

96.

What amino acid does AUG code for?

a)

Stop

b)

Met

c)

Leu

d)

Asp

97.

Finish this sentence: DNA replication results in two DNA molecules,

a)

each with 2 new strands

b)

one with 2 new strands and the other with 2 original strands

c)

each with one new strand and one original strand

d)

each with 2 original strand

98.

Based on Chargaff's rule, the percentage of guanine is _____ the percentage of cytosine

a)

greater than

b)

lesser than

c)

equal to

d)

not related

99.

In eukaryotes, DNA is found in

a)

the cytoplasm

b)

the nucleus

c)

the ribosomes

d)

the polymerase

100.

A nucleotide is made of all of the following except

a)

a sugar

b)

a nitrogen

c)

a phosphate group

d)

a codon

101.

RNA has all of the following except

a)

ribose

b)

nitrogen base

c)

phosphate group

d)

deoxyribose

102.

Which base is not found in RNA?

a)

Adenine

b)

Uracil

c)

Thymine

d)

Cytosine

103.

In eukaryotes, where does transcription take place?

a)

cytoplasm

b)

nucleus

c)

ribosome

d)

rRNA

104.

Transcription produces what molecule?

a)

DNA

b)

mRNA

c)

tRNA

d)

rRNA

105.

Proteins are produced from what process?

a)

Replication

b)

Transcription

c)

Translation

d)

Duplication

106.

mRNA is produced from what process?

a)

Replication

b)

Translation

c)

Transcription

d)

Duplication

107.

In eukaryotes, where is mRNA produced?

a)

ribosome

b)

cytoplasm

c)

nucleus

d)

histone

108.

Where are proteins produced?

a)

DNA

b)

ribosome

c)

nucleus

d)

histone

109.

How many nucleotides are needed to specify for two amino acids?

a)

6

b)

9

c)

12

d)

3

110.

Which of the following is not a type of RNA?

a)

cytoplasmic

b)

ribosomal

c)

transfer

d)

messenger

111.

What type of RNA is responsible for carrying messages from DNA to make proteins?

a)

mRNA

b)

rRNA

c)

tRNA

d)

RANi

112.

Which type of RNA is responsible for transporting amino acids to the ribosome?

a)

tRNA

b)

mRNA

c)

rRNA

d)

RNAi

113.

What type of RNA makes up the subunits of the ribosome?

a)

rRNA

b)

mRNA

c)

tRNA

d)

RNAi

114.

From what molecules are mRNA molecules transcribed?

a)

tRNA

b)

proteins

c)

mRNA

d)

DNA

115.

What happens during translation?

a)

mRNA is produced

b)

copies of DNA are made

c)

the RNA is decoded into amino acids

d)

tRNA is produced from mRNA

116.

Which of the following could make up one nucleotide of DNA?

a)

Deoxyribose, phosphate group, thymine

b)

Deoxyribose, phosphate group uracil

c)

Ribose, phosphate group, thymine

d)

Ribose, phosphate group, uracil

117.

Which of the following could make up a nucleotide of RNA?

a)

Deoxyribose, phosphate group, thymine

b)

Deoxyribose, phosphate group, uracil

c)

Ribose, phosphate group, uracil

d)

Ribose, phosphate group, thymine

118.

Which of the following is not a difference between RNA and DNA?

a)

The sugar in RNA is ribose instead of deoxyribose

b)

RNA is generally single stranded and not double straned

c)

RNA contains uracil in place of thymine

d)

DNA has a ribose backbone, RNA has a deoxyribose backbone

119.

All of the following is true in regards to DNA except

a)

All living things contain DNA

b)

DNA is only found in plant cells

c)

DNA is found in the nucleus of cells

d)

DNA contains genetic code

120.

Purines are double ring structures

a)

True

b)

False

121.

Purines always pair with

a)

Purines

b)

Pyrimidines

122.

In 1953, _______________ & ______________________ discovered the structure of DNA.

a)

Lewis & Clark

b)

Johnson & Johnson

c)

Watson & Crick

d)

Gulbrandson & Ud

123.

If you had to describe the shape of DNA, you would say it is

a)

Oblong

b)

Double helix

c)

Pentagon

d)

Replication

124.

DNA replication occurs ___________ cell division

a)

before

b)

after

c)

at the same time as

d)

1 month before

125.

The three types of RNA are

a)

mRNA, tRNA, sRNA

b)

mRNA, tRNA, dRNA

c)

mRNA, tRNA, pRNA

d)

mRNA, tRNA, rRNA

126.

Amino acids make up

a)

carbohydrates

b)

proteins

c)

sugars

d)

gas molecules

127.

What is the name given to a group of 3 nucleotides on a mRNA?

a)

Codons

b)

Anti-codons

c)

RNA

d)

Triplet

128.

What is the process called where mRNA is created/made?

a)

Replication

b)

Transcription

c)

Transloation

d)

Transformation

129.

Transcription occurs in the _____ of the cell

a)

ribosome

b)

cell wall

c)

mitochondria

d)

nucleus

130.

What is the process called where mRNA is converted into amino acids?

a)

Replication

b)

Transcription

c)

Translation

d)

Transformation

131.

Translation occurs in the _____________ part of the cell

a)

mitochondria

b)

nucleus

c)

golgi body

d)

ribosome

132.
Which sequence of DNA bases would pair with this partiaal strand
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
133.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
134.
Which of the following units are repeatedly joined together to form a strand of DNA?
a)
amino acids
b)
nucleotides
c)
fatty acids
d)
polysaccharides
135.
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
136.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
137.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
138.
Why is DNA important?
a)
it is very small and very complicated
b)
it's in everything
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
139.
What are the 4 nitrogen bases?
a)
adenine, thymine, cytoplasm, and guanine
b)
adenine, thymine cytosine, and guanine
c)
adenine, thymine, cytosine, and gylcerol
d)
adenine, thymine, cytosine, and glucose
140.
What determines the code, or information, of a DNA molecule?
a)
the shape (structure) of the nitrogen bases
b)
the order (sequence) of the nitrogen bases
c)
the color of the nitrogen bases
d)
the frequency (number) of nitrogen bases
141.
Which 2 molecules form the sides (backbone) of the DNA ladder?
a)
deoxyribose and adenine
b)
deoxyribose and a hydrogen bond
c)
deoxyribose and the nucleus
d)
deoxyribose and phosphate
142.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
143.
Name this structure
a)
double helix
b)
nucelotide
c)
twisted ladder
d)
hydrogen bond
144.
DNA codes for...
a)
cholesterol
b)
proteins
c)
fatty acids
d)
a sandwich
145.
Nitrogenous bases are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
146.
Nucleotides are made up of a sugar, phosphate, and..?
a)
nitrogenous base
b)
nucleic acid
c)
cholesterol
d)
fatty acid
147.
Which process is shown?
a)
diffusion
b)
repiration
c)
recombination
d)
translation
148.
Which of the following is the blueprint for the production of RNA within a cell?
a)
DNA
b)
protein
c)
ATO
d)
carbohydrate
149.
When an extra base is inserted into the DNA sequence of a gene, the protein doesn't work. Which explains why?
a)
the base increases rate of translation
b)
the base causes DNA to be transcribed in opposite direction
c)
the inserted base causes the codons in the sequence to be incorrect for the desired protein
d)
the base signals enzymes to translate DNA rather than RNA
150.
What molecules do both DNA and RNA contain?
a)
uracil
b)
nucleotides
c)
thymine
d)
deoxyribose
151.
Which of the following best describes how DNA and RNA are similar?
a)
they both contain A and T
b)
They both have a double helix
c)
They are both composed of 5 different nucleotides
d)
they both have C and G
152.
The DNA sequence ATCAGCGCTGGC is part of a gene. How many amino acids are coded for by this message?
a)
4
b)
8
c)
12
d)
20
153.
DNA sequence is ACAGTGC. How would this be coded on mRNA?
a)
TGTCACG
b)
UGUCACG
c)
GUGACAU
d)
CACUGUA
154.
What is the relationship between a protein, the cell, and DNA?
a)
DNA is produced by protein which is produced in the cell
b)
Protein is composed of DNA which is produced in the cell
c)
DNA controls the production of protein in the cell
d)
A cell is composed of DNA and protein
155.
Genetic info flows in one direction. Which best represents this flow?
a)
DNA-protein-RNA
b)
Protein-RNA-DNA
c)
RNA-protein-DNA
d)
DNA-RNA-protein
156.
Which of the following is incorrect regarding RNA?
a)
RNA contains uracil
b)
RNA can only be found inside the nucleus
c)
RNA is single stranded
d)
RNA contains genetic information
157.
The diagram shows the process of
a)
Transcription
b)
Translation
c)
Replication
d)
Mitosis
158.
What nitrogen base is in DNA but NOT RNA?
a)
uracil
b)
thymine
c)
guanine
d)
adenine
159.

Match the following nucleotide with its complementary base, DNA

a)

Adenine

1.

Thymine

b)

Cytosine

2.

Guanine

c)

Guanine

3.

Cytosine

d)

Thymine

4.

Adenine

160.

Drag the amino acids to their correct location in the protein.

a)

Ala

b)

Agr

c)

Cys

d)

Leu

e)

Ser

1
2
3
4
5
1)
2)
3)
4)
5)
161.

mRNA is synthesized during (a)  

162.

mRNA is made in the

a)
cytoplasm
b)
mitochondria
c)
endoplasmic reticulum
d)
nucleus
163.

DNA is located in the _________

a)
nucleus
b)
cytoplasm
c)
mitochondria
d)
cell membrane
164.

mRNA is made of three letters called

a)

Codons

b)

Anti-codons

c)

Triplets

d)
amino acids
165.

_______ is used to carry the genetic code from the DNA to the ribosome

a)

rRNA

b)

tRNA

c)

mRNA

166.

Which type of RNA makes up ribosomes?

a)

mRNA

b)

tRNA

c)

rRNA

167.

(a)   uses uracil instead of thymine

168.

Match the following

a)

3 codons equals

1.

one amino acid

b)

3 DNA bases

2.

triplet

c)

3 mRNA bases

3.

codon

d)

3 tRNA bases

4.

anti-codon

169.

Where does transcription take place? Drag and drop your answer

a)

Ribosome

b)

Endoplasmic reticulum

c)

Golgi body

d)

Nucleus

e)

Cytoplasm

f)

Chloroplast

g)

Vacuole

1
1)
170.

Match the following

a)

mRNA

1.

DNA to RNA

b)

tRNA

2.

moves amino acids

c)

rRNA

3.

makes ribosomes

171.

Match the following

a)

Triplet

1.

DNA

b)

Codon

2.

mRNA

c)

Anti-codon

3.

tRNA

172.

Where are protein synthesized?

a)

Nucleus

b)

Ribosomes

c)

Mitochondria

d)

Chloroplast

173.

Which type of bond attaches the amino acid to the chain?

a)

Hydrogen bonds

b)

Ionic bonds

c)

Covalent bonds

d)

Peptide bonds

174.

Where is tRNA located in the cell?

a)

Nucleus

b)

Ribosomes

c)

Mitochondria

d)

Cytoplasm

175.

Which organelle convert mRNA to proteins?

a)

Nucleus

b)

Ribosomes

c)

Mitochondria

d)

Cytoplasm

176.

Where does translation occur?

a)

Nucleus

b)

Ribosomes

c)

Mitochondria

d)

Cytoplasm

177.

Converts DNA to mRNA

A
B
178.

Converts RNA into proteins

A
B
179.

The first step in protein synthesis

A
B
180.

The second step in protein synthesis

A
B

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