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Unit 3: Molecular Genetics Review

Total questions: 150

Worksheet time: 2hrs 1mins

Name
Class
Date
1.

There are three tenets of the Cell Theory. Which of the following is NOT a tenet?

a)

Cells are the basic structure and function of life.

b)

All living things are made of one or more cells.

c)

The cell is the basic unit of matter.

d)

All cells come from preexisting cells.

2.

Which of the following statements is true?

a)

Plants and animal cells have cell walls for protection.

b)

Plant cells contain chlorophyll

c)

Animal cells have one large vacuole; the plant cell has tiny ones.

d)

Animal cells are box shaped; plant cells are circular

3.

In meosis, the newlyformed cells are duplicates of the parent cells

a)

True

b)

False

4.

An acronym for explaining the stages of cellular division is______.

a)

PNAT

b)

DPOT

c)

PMAT

d)

DSOT

5.

In mitosis, the newly formed cells are all different from each other

a)

True

b)

False

6.

Chromosomes are located in

a)

Nucleus

b)

Mitochondria

c)

Stomata

d)

Chomaarti

7.

Phenotype are the ___________ characteristics

a)

Gene

b)

Physical Traits

c)

Hungry

d)

I dont know

8.

Genotype may be defined as the ______________.

a)

I dont know

b)

Mutant Variation

c)

Phenotype

d)

Genetic material

9.

The Punnett Square is used to

a)

Find the White Flower

b)

Calculate Probability

c)

Punt

d)

Square the results of the traits

10.

Gregor Mendel used the paintbrush as a tool to provide ______________ for his experiment

a)

spraypaint

b)

danger

c)

creativity

d)

control

11.

What is the order of the three phases in interphase?

a)

G1, G2, S

b)

S, G1, G2

c)

G1, S, G2

d)

G1, G2, G3

12.
Structure (b) is a ____.
a)
chromosome
b)
chromatid
c)
centromere
13.
Structure (a) is a ____.
a)
chromosome
b)
chromatid
c)
centromere
14.
the two halves of the doubled chromosome structure 
a)
centromeres
b)
sister chromatids
c)
spindle
d)
tissues
15.
The result of meiosis is:
a)
two diploid cells
b)
two haploid cells
c)
four diploid cells
d)
four haploid cells
16.
Most of the cells in the human body are produced by
a)
mitosis
b)
meiosis
17.
products of meiosis are genetically
a)
different
b)
identical
18.
What causes genetic variation in meiosis?
a)
chromosomes lining up
b)
crossing over of chromosomes
c)
separation of chromosomes
d)
chromosomes pulling apart
19.

What are the two parts of the cell cycle?

a)

Interphase and Mitosis

b)

Interphase and Cytokinesis

c)

Interphase and Meiosis

d)

Mitosis and Meiosis

20.

In what part of the Cell Cycle does the cell grow and replicate DNA?

a)

Interphase

b)

Mitosis

c)

Meiosis

d)

Cytokinesis

21.

What is the order of the three phases in interphase?

a)

G1, G2, S

b)

S, G1, G2

c)

G1, S, G2

d)

G1, G2, G3

22.

In which process are Gametes produced?

a)

Mitosis

b)

Meiosis

23.

In which phase of the cell cycle does a cell spend the longest time?

a)

Interphase

b)

Mitosis

24.

What phase of mitosis is shown in D?

a)

Prophase

b)

Telophase

c)

Anaphase

d)

Metaphase

25.

What is happening during crossing over in Meiosis?

a)

chromatids are replicating

b)

chromatids are exchanging genetic information

c)

chromatids are changing color

d)

chromatids are being deleted

26.

In what phase of Meiosis 1 is crossing over occurring?

a)

Prophase

b)

Anaphase

c)

Metaphase

d)

Telophase

27.

Which stage of Mitosis is being shown and described:


Chromosomes line up in the middle.

a)

interphase

b)

prophase

c)

metaphase

d)

anaphase

28.

Which stage of Mitosis is being shown and described:


Daughter cells are pinched apart and parent cell's cytoplasm is divided between the 2 new cells.

a)

Cytokinesis

b)

Metaphase

c)

Anaphase

d)

Telophase

29.

Which stage of Mitosis is being shown and described:


The nucleus begins to disappear and chromosomes form.

a)

Telophase

b)

Anaphase

c)

Prophase

d)

Interphase

30.

Which stage of Mitosis is being shown and described:


Chromosome pairs are split and tugged to opposite ends of the cell

a)

Prophase

b)

Metaphase

c)

Anaphase

d)

Telophase

31.

What stage of Mitosis is being shown and described:


New nuclear membrane begins to form around each new nucleus and the cell is pinched.

a)

Anaphase

b)

Telophase

c)

Metaphase

d)

Cytokinesis

32.

What stage of Meiosis is being shown and described:


The homologs of each chromosome pair separate and are pulled to opposite ends

a)

Prophase 1

b)

Metaphase 1

c)

Anaphase 1

d)

Telophase 1

33.

What stage of Meiosis is being shown and described:


Copied pairs partner up, chromosomes condense and nuclear membrane disappears.

a)

Prophase 1

b)

Metaphase 1

c)

Anaphase 1

d)

Telophase 1

34.

What stage of Meiosis is being shown and described:


The pairs line up in the center of the cell.

a)

Prophase 1

b)

Metaphase 1

c)

Anaphase 1

d)

Telophase 1

35.

What stage of Meiosis is being shown and described:


Cell divides into 2 daughter cells. (2n...Diploid cells)

a)

Prophase 1

b)

Metaphase 1

c)

Anaphase 1

d)

Telophase 1

36.

What stage of Meiosis is being shown and described:


Chromatids split forming individual chromosomes and are pulled to opposite ends of the cell.

a)

Prophase 2

b)

Metaphase 2

c)

Anaphase 2

d)

Telophase 2

37.

What stage of Meiosis is being shown and described:


Both cells divide producing 4-1n cells (haploid) containing half the number of chromosomes

a)

Prophase 2

b)

Metaphase 2

c)

Anaphase 2

d)

Telophase 2

38.
What are chromosomes?
a)
The control center
b)
Condensed chromatin
c)
Handle for spindle fibers
d)
Microtubules
39.
What are spindle fibers?
a)
One half of a chromosome
b)
Condensed chromatin
c)
Kinetechores
d)
Protein structures that separate chromosomes
40.
At the end of mitosis, how many identical cells will you have?
a)
1
b)
2
c)
3
d)
4
41.
If an organism has a diploid (2n) number of 6, what is its haploid (n) number?
a)
2
b)
3
c)
6
d)
12
42.

Bacteria reproduce asexually by a process called

a)

replication

b)

meiosis

c)

mitosis

d)

binary fission

43.
In binary fission how does the DNA of the daughter cells compare to the DNA of the parent cell? 
a)
It is only half of the amount of DNA found in the parent.
b)
It is identical.
c)
It is a mix of the parent's DNA.
d)
It has some similarities and some differences.
44.
Diploid Cells are represented by
a)
2n
b)
n
c)
4n
d)
1/2 n
45.
Which letter(s) in the diagram correspond to cells that are haploid? 
a)
A
b)
B
c)
C
d)
A and B
46.
In binary fission how does the DNA of the daughter cells compare to the DNA of the parent cell? 
a)
It is only half of the amount of DNA found in the parent.
b)
It is identical.
c)
It is a mix of the parent's DNA.
d)
It has some similarities and some differences.
47.

Homozygous are the

a)

same pair of genes

b)

Cc

c)

different pair of genes

48.

Recessive genes are

a)

strong genes

b)

weak genes

c)

BB

49.

Heterozygous are

a)

The same pair of genes

b)

different pair of genes

c)

bb

50.

Wrinkle seeds are recessive over Round.


Which pair is a recessive gene?

a)

RR

b)

rr

c)

Rr

51.
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
52.
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
53.
The process of making an mRNA strand from a DNA template is called
a)
Replication
b)
Transcription
c)
Translation
d)
Protein Synthesis
54.
Transcription takes place in the 
a)
cytoplasm
b)
chloroplast
c)
nucleus
d)
mitochondria
55.

STRUCTURE: One difference between RNA and DNA is -

a)

RNA has thymine where DNA has ademine

b)

DNA is single stranded where RNA is double stranded

c)

DNA is made in the nucleus where RNA is made in the ribosomes

d)

RNA is single stranded where DNA is double stranded

56.

STRUCTURE: What Nitrogenous Base does RNA contain that DNA does not?

a)

Thymine

b)

Uracil

c)

Adenine

d)

Love

57.

STRUCTURE: In the DNA double helix, the bases (AtoT and CtoG) are held together by:

a)

polar bonds

b)

ionic bonds

c)

covalent bonds

d)

hydrogen bonds

58.

TRANSLATION:

This is

a)

tRNA

b)

mRNA

c)

DNA

d)

a ribosome

59.

HISTORY: Took the X-Ray crystallography photographs that revealed that DNA is a Double Helix

a)

Rosalind Franklin

b)

Linnus Pauling

c)

Fredrick Griffeth

d)

Martha Chase

60.
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
61.
The central dogma of biology states that information flows in one direction from 
a)
nuclei to RNA to cytoplasm
b)
ribosomes to proteins to DNA
c)
genes to nuclei to ribosomes
d)
DNA to RNA to proteins
62.
What amino acid is represented by the codon UUA?
a)
Phenylalanine
b)
Tyrosine
c)
Leucine
d)
Stop codon
63.
Which is the mRNA molecule that would be transcribed from this DNA template:
TGGCAAGTACGT
a)
ACCGTTCATGCA
b)
UGGCAAGUACGU
c)
UCCGUUCUUGCU
d)
ACCGUUCAUGCA
64.
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
65.
How many amino acids are coded for by this sequence of nucleotides:
ATG GGA ACT CCA
a)
4
b)
2
c)
6
d)
12
66.

When using your codon chart, what sequence can you use to find the correct amino acid?

a)

DNA

b)

mRNA

c)

tRNA

d)

Any of these will do

67.

What amino acid would the DNA TTT get you?

a)

LYS

b)

PHE

c)

VAL

d)

NONE

68.

What amino acid does the mRNA AGG get?

a)

SER

b)

ARG

c)

VAL

d)

PRO

69.
What amino acid is this codon?
CCA
a)
Proline
b)
Serine
c)
Valine
d)
Arginine
70.
Given the following sequence of mRNA, what series of amino acids are coded for?
mRNA: CUCAAGUGCUUC
a)
Ser-Tyr-Arg-Gly
b)
Val-Asp-Pro-His
c)
Leu-Lys-Cys-Phe
d)
Pro-Glu-Leu-Val
71.
How would the DNA sequence GCTATA be transcribed to mRNA?
a)
GCUAUA
b)
CGATAT
c)
CGAUAU
d)
GCUTUT
72.

What is the correct order to make a protein?

a)

Protein, DNA, RNA

b)

RNA, DNA, Protein

c)

DNA, RNA, Protein

d)

Protein, RNA, DNA

73.
If one strand of DNA has the sequence TTACCG, the sequence of the other strand of the same molecule will be
a)
AATGGC
b)
TTACCG
c)
AACGGC
d)
AATGGG
74.
True or false:  RNA is double-stranded.
a)
true
b)
false
c)
it depends on the type
75.
DNA codes for...
a)
cholesterol
b)
proteins
c)
fatty acids
d)
a sandwich
76.

STRUCTURE: One difference between RNA and DNA is -

a)

RNA has thymine where DNA has ademine

b)

DNA is single stranded where RNA is double stranded

c)

DNA is made in the nucleus where RNA is made in the ribosomes

d)

RNA is single stranded where DNA is double stranded

77.

STRUCTURE: What Nitrogenous Base does RNA contain that DNA does not?

a)

Thymine

b)

Uracil

c)

Adenine

d)

Love

78.

STRUCTURE: Which 2 molecules form the sides of the DNA ladder?

a)

deoxyribose and adenine

b)

deoxyribose and a hydrogen bond

c)

sugar and the nucleus

d)

deoxyribose (sugar) and phosphate

79.

STRUCTURE: In the DNA double helix, the bases (AtoT and CtoG) are held together by:

a)

polar bonds

b)

ionic bonds

c)

covalent bonds

d)

hydrogen bonds

80.

GENERAL: DNA is found in the:

a)

cell membrane

b)

vacuole

c)

chloroplast

d)

nucleus

81.

HISTORY: Rosalind Franklin used x-ray crystallography to determine that the shape of the DNA molecule is:

a)

a cloverleaf

b)

a braided rope

c)

a pleated sheet

d)

a twisted ladder

82.

STRUCTURE: Nucleotides monomers are made up of a sugar, a phosphate, and a:

a)

nitrogenous base

b)

nucleic acid

c)

cholesterol

d)

fatty acid

83.

STRUCTURE: The five-carbon sugar found in DNA.

a)

ribose

b)

guanine

c)

deoxyribose

d)

helicase

84.

GENERAL: What kind of organic molecule is DNA?

a)

Protein

b)

Nucleic Acid

c)

Lipid

d)

Carbohydrate

85.

GENERAL: A nucleic acid that is composed of a phosphate, ribose sugar, and one of four nitrogen bases.

a)

STP

b)

ATP

c)

DNA

d)

RNA

86.

PROCESSES: DNA making RNA is called:

a)

Translation

b)

Transcription

c)

Transference

d)

Translocation

87.

PROCESSES: RNA making a protein is called:

a)

Transmutation

b)

Transferrance

c)

Transcription

d)

Translation

88.

TRANSLATION: Smaller segments of clover leaf shaped RNA that transport amino acids:

a)

Messenger RNA

b)

Transfer RNA

c)

Ribosomal RNA

d)

Okazaki Fragments

89.

TRANSLATION:

This is

a)

tRNA

b)

mRNA

c)

DNA

d)

a ribosome

90.

TRANSCRIPTION: What is the mRNA complementary mRNA base sequence for: CAGTTCCAG

a)

GUCAAGGUC

b)

GTGAAGGTC

91.

TRANSCRIPTION:

Transcription occurs in the:

a)

nucleus

b)

cytoplasm

c)

ribosomes

d)

kitchen

92.

TRANSLATION:

Translation occurs in the:

a)

office

b)

cytoplasm

c)

nucleus

d)

cell membrane

93.

HISTORY: Built the first correct model of DNA

a)

Watson and Crick

b)

Linnus Pauling

c)

Rosalind Franklin

d)

Hershey and Chase

94.

HISTORY: Discovered Bacterial Transformation

a)

Fredrick Griffeth

b)

Erwin Chargaff

c)

Rosalind Franklin

d)

Martha Chase

95.

HISTORY: Discovered that A and T bond together and C and G bond together...

a)

Watson and Crick

b)

Rosalind Franklin

c)

Fredrick Griffeth

d)

Erwin Chargaff

96.

HISTORY: Performed an experiment with Bacteriophage viruses that proved DNA was the genetic material

a)

Maurice Wilkens and Rosalind Franklin

b)

James Watson and Francis Crick

c)

Alfred Hershey and Martha Chase

d)

Peanut butter and Jelly

97.

HISTORY: Two time Nobel Prize winner who suggested a structure for DNA - but got it completely wrong...

a)

James Watson

b)

Francis Crick

c)

Rosalind Franklin

d)

Linnus Pauling

98.

HISTORY: Took the X-Ray crystallography photographs that revealed that DNA is a Double Helix

a)

Rosalind Franklin

b)

Linnus Pauling

c)

Fredrick Griffeth

d)

Martha Chase

99.

REPLICATION:

DNA replication is when:

a)

DNA makes DNA

b)

DNA makes RNA

c)

RNA makes Protein

d)

DNA makes Protein

100.

REPLICATION:

DNA Replication is:

a)

Is Semi-conservative

b)

Is a double helix

c)

Has no hydrogen Bonds

d)

Makes a protein

101.

A codon is a sequence of three nucleotides that code for an amino acid. If the DNA sequence shown here goes through transcription and translation, how many amino acids will result from this sequence?

ACTAGTGAT

a)

5

b)

4

c)

2

d)

3

102.

Why do cells need both tRNA and mRNA?

a)

Only tRNA bends into a shape that can carry specific amino acids.

b)

Only mRNA can be used to repair mistakes in the DNA sequence.

c)

The tRNA in used on the ribosomes and the mRNA is used in the nucleus.

d)

The mRNA brings information to the nucleus for the tRNA to use.

103.

A cell is replicating its DNA. Part of the DNA strand reads A-C-C-G-T-A-C. The new strand built off this section reads T-G-G-A-A-T-G. What effect might this have when the DNA replicates in the future?

a)

Cells having the new DNA version will look or operate differently from cells with the original DNA.

b)

Only the sections of DNA without mistakes will be used in the future so the DNA strand will shorten.

c)

The DNA will be exactly like the original since only the original strand of DNA is used as a template.

d)

When the new strand is used as a template the strand built from it will differ from the original DNA.

104.

Which process is shown in the diagram

a)

Mitosis

b)

Meiosis

c)

Transcription

d)

Translation

105.

Transcription must occur in order for proteins to be synthesized. What is the direct product of transcription?

a)

tRNA

b)

mRNA

c)

RNA

d)

DNA

106.

Which type of molecule is the end product of the processes shown in the diagram?

a)

DNA

b)

RNA

c)

Protein

d)

Amino Acid

107.

Where does Translation take place?

a)

Nucleus

b)

Mitochondria

c)

Ribosome

d)

Cytoplasm

108.

A partial base sequence of a DNA molecule is shown below.

CAGCCATCA

What is the complementary base sequence of the DNA strand?

a)

GTCGCATCA

b)

GTCAACGGC

c)

GTCGGCAGC

d)

GTCGGTAGT

109.

What 3 things make up DNA

a)

Sugar, phosphate, base

b)

Sugar, nitrogen, base

c)

Sugar, base, acid

d)

sugar, acid nitrogen

110.

Which is NOT a difference between RNA and DNA?

a)

RNA is single stranded while DNA is double stranded

b)

RNA contains uracil while DNA contains Thymine

c)

DNA uses deoxyribose sugar while RNA uses Ribose

d)

All of these are corrent

111.

The central dogma of molecular biology can be summed up by

a)

DNA + RNA = Protein.

b)

DNA to RNA to Protein.

c)

RNA to DNA to Protein.

d)

RNA + DNA = Protein.

112.

Scientists who first determined that DNA is the genetic material were led by

a)

Oswald Avery.

b)

Erwin Chargaff.

c)

James Watson.

d)

Francis Crick.

113.

The two polynucleotide chains of DNA are held together by bonds between

a)

amino acids.

b)

sugars and phosphates.

c)

complementary bases.

d)

adenine and uracil.

114.

DNA replication results in

a)

two DNA molecules that are identical to the original DNA molecule.

b)

one mRNA molecule that is complementary to the DNA molecule.

c)

one chain of amino acids that is complementary to the DNA molecule.

115.

How does RNA differ from DNA?

a)

RNA contains the sugar deoxyribose instead of ribose.

b)

RNA contains the nitrogen base thymine instead of uracil.

c)

RNA consists of one nucleotide chain instead of two.

116.

The first step of transcription is

a)

promotion.

b)

elongation.

c)

initiation.

d)

splicing.

117.

The genetic code is

a)

unique in each species.

b)

ambiguous.

c)

uncommon.

d)

redundant.

118.

Translation involves all of the following types of molecules except

a)

amino acids.

b)

mRNA.

c)

tRNA.

d)

DNA.

119.

A frameshift mutation is caused by an insertion or

a)

deletion.

b)

translocation.

c)

inversion.

d)

diversion.

120.

Which of the following terms is most closely associated with a tRNA molecule?

a)

codon

b)

anticodon

c)

transcription

d)

ribosome

121.

The molecule that copies the genetic instructions from DNA is

a)

rRNA

b)

mRNA

c)

tRNA

122.

The genetic code consists of ______ letter words.

a)

one

b)

two

c)

three

d)

four

123.

The addition of nucleotides to a growing mRNA strand is called

a)

splicing

b)

frameshift

c)

elongation

d)

mutagen

124.

Introns are removed from mRNA by the process of

a)

splicing

b)

frameshift

c)

elongation

d)

mutagen

125.

What are the code “words” of the genetic code?

a)

operator

b)

anticodon

c)

codon

d)

RNA

126.

Anything in the environment that causes a mutation is a(n)

a)

splicing

b)

frameshift

c)

elongation

d)

mutagen

127.

What is the start codon which establishes the reading frame?

a)

CCC

b)

GGG

c)

AUG

d)

ACT

128.

What mutation is a deletion or insertion of one or more nucleotides that changes the reading frame of the base sequence?

a)

splicing

b)

frameshift

c)

elongation

d)

mutagen

129.

A disease caused by a mutation in one or a few genes is referred to as a(n)

a)

genetic disorder

b)

malfunction

c)

inheritance

130.

The region of an operon where regulatory proteins bind is the

a)

operator

b)

anticodon

c)

codon

d)

RNA

131.

A type of RNA that "reads" the codons from messenger RNA

a)

Stop Codon

b)

GCCAUAGGC

c)

Translation

d)

Ribosomal RNA (rRNA)

132.

a sequence of three nucleotide bases that represents the code for one amino acids

a)

rRNA

b)

DNA

c)

Codon

d)

Helicase

133.

a type of RNA that transfers the code from DNA in the nucleus to the cytoplasm

a)

Messenger RNA (mRNA)

b)

Transcription

c)

RNA

d)

Ribose

134.

Peptide Bond

a)

the bond of bases C to G and A to T

b)

the bond between each amino acid in a protein

c)

the process of DNA

d)

to be honest i dont know

135.

the sequence of three nucleotides on transfer RNA that pairs with the codons of messenger RNA

a)

Anticodons

b)

Codons

c)

Stop codon

d)

Transfer RNA

136.

Ribonucleic acid (RNA)

a)

a single strand of chromoses

b)

double helix structure

c)

a single strand of nucleotides

d)

all of the above

137.

RNA polymerase

a)

Translation

b)

the enzyme responsible for creating RNA from a DNA template

c)

Transcription

d)

the process of never ending DNA

138.

Stop Codon

a)

a sequence of three nucleotide bases that indicate the end of protein synthesis.

b)

A to T C to G

c)

from DNA to RNA to Proteins

d)

the bond between each amino acid in a protein

139.

Transcription

a)

copying of the DNA strand

b)

the process occuring in the nucleus of a cell that copies the instructions from a part of DNA onto a strand of messenger RNA

c)

the process occurring in the cytoplasm of a cell that builds proteins

d)

code for a protein

140.

Translation

a)

a virus that spreads through the DNA and could harm the coding for the genes

b)

the bond between an amino acid

c)

the process occuring in the cytoplasm of a cell that builds proteins

d)

the process occuring in the nucleus of a cell that copies the instructions from a part of DNA onto a strand of messenger RNA

141.

Transfer RNA (tRNA)

a)

a type of RNA that carries an amino acid and transfers it to the protein chain being assembled in the ribosome

b)

Protein Synthesis to the Plasma Membrane

c)

RNA that is transferred throughout cells and the DNA

d)

RNA that is transferred from eukaryotic cells to prokaryotic

142.

The monomers of DNA and RNA are

a)

nucleic acids

b)

fatty acids

c)

nucleotides

d)

monosaccharides

143.

Which statement regarding DNA is false?

a)

DNA molecules have a sugar-phosphate backbone

b)

DNA contains the nitrogenous base uracil

c)

One DNA molecule can include four different nucleotides in its structure

d)

DNA contains the sugar deoxyribose

144.

The shape of a DNA molecule is most like

a)

beads on a string

b)

a wooden ladder

c)

a twisted rope ladder

d)

a set of railroad tracks

145.

Which enzyme catalyzes the elongation of a new DNA strand?

a)

DNA ligase

b)

reverse transcriptase

c)

DNA polymerase

d)

RNA polymerase

146.

Which option best depicts the flow of information when a gene directs the synthesis of a cellular component?

a)

DNA--> RNA--> protein

b)

RNA--> DNA--> RNA--> protein

c)

protein --> RNA --> DNA

d)

DNA-->tRNA-->mRNA--> protein

147.

Which enzyme catalyzes the elongation of a new DNA strand?

a)

DNA ligase

b)

reverse transcriptase

c)

DNA polymerase

d)

RNA polymerase

148.

Any change in the nucleotide sequence of DNA is called a

a)

mutation

b)

base substitution

c)

frameshift

d)

silent

149.

Anti-codons are found on which molecule?

a)

mRNA

b)

tRNA

c)

rRNA

d)

DNA

150.

Codons are found on which molecule?

a)

mRNA

b)

tRNA

c)

rRNA

d)

DNA

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