WorksheetsUnit 12 Molecular Genetics
Total questions: 74
Worksheet time: 1hrs 5mins
Name
Class
Date
1.
The three base code in DNA or mRNA
a)
Codon
b)
Exon
c)
Intron
d)
Radon
2.
The COMPLEMENT to:
ATG CAT
ATG CAT
a)
TAC GTA
b)
TTC CTA
c)
AAC UCT
d)
UAC CAU
3.
The _______ represents the shape of the dna molecule.
a)
Helix
b)
Double Helix
c)
Ladder
d)
Quartenary
4.
The correct 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
5.
What does RNA contain that DNA does not?
a)
Thymine
b)
Uracil
c)
Adenine
d)
Love
6.
What is the correct DNA complementary base to
AAT CGT TAC
AAT CGT TAC
a)
AAT GCA TAC
b)
TTA CGT ATG
c)
TTA GCA ATG
d)
UUA GCA AUG
7.
What is the corrent RNA complentary base to the DNA-
AAT GCT ATA GGC CCC
AAT GCT ATA GGC CCC
a)
TTA CGA TAT GGG
b)
UUA CGU UAU GGG
c)
UUA CGA UAU GGG
d)
TTA CGA TAT GGG
8.
In DNA replication the enzyme _ unwinds and separates a portion of DNA.
a)
polymerase
b)
helicase
c)
lactase
d)
lac operon
9.
mRNA is made in a process called _ where it is copied from a strand of DNA.
a)
transcription
b)
translation
c)
replication
d)
synthesis
10.
The section of RNA called _ RNA travels from the nucleus to the cytoplasm after it is made.
a)
transfer
b)
messenger
c)
travel
d)
ribosomal
11.
Transcription occurs in the _.
a)
nucleus
b)
cytoplasm
c)
ribosomes
d)
kitchen
12.
Translation occurs in the _.
a)
office
b)
cytoplasm
c)
nucleus
d)
cell membrane
13.
One difference between DNA and RNA is that RNA....
a)
is double stranded
b)
contains the base Thymine
c)
contains the base Uracil
d)
contained the base Guanine
14.
Codons contain ______ bases
a)
1
b)
3
c)
6
d)
9
15.
Does the order of amino acids in a protein matter?
a)
YES!
b)
NO!
16.
tRNA is involved in
a)
carrying amino acids
b)
carrying ribosomes
c)
carrying glucose
d)
carrying lipids
17.
Amino acids are joined together in order to form
a)
DNA
b)
ribosomes
c)
proteins
d)
RNA
18.
Translation is crucial to the process of making proteins. Which statement best describes what takes place during translation?
a)
A copy of chromosomal DNA is created
b)
Information in mRNA is converted into a sequence of amino acids in a protein
c)
A RNA copy of a DNA strand is made.
d)
Instructions from DNA in the nucleus are brought to the cytoplasm
19.
which process is shown?
a)
diffusion
b)
repiration
c)
recombination
d)
translation
20.
The anticodon is located on
a)
DNA
b)
mRNA
c)
tRNA
d)
rRNA
21.
In a ____ mutation, one base pair is changed our on DNA.
a)
Point
b)
Frameshift
c)
Cross over
d)
Translocation
22.
When bases are added or deleted, the mRNA will be read out of sync, to the right or left of normal. this is___.
a)
Deletion
b)
Insertion
c)
Frameshift
d)
Crossover
23.
A mistake in crossover can result in segments of the chromosome ending up on a completely wrong non-homologous chromosome. This is___.
a)
Substitiution
b)
Deletion
c)
Translocation
d)
Disfunction
24.
Which of these bases does not exist in RNA?
a)
C
b)
T
c)
U
d)
A
25.
True or false: RNA is double-stranded.
a)
true
b)
false
c)
it depends on the type
26.
what does mRNA do?
a)
carry info from genes to ribosomes
b)
carry amino acids to ribosomes
c)
help with RNA splicing
d)
make up ribosomes
27.
what does tRNA do?
a)
carry info from genes to ribosomes
b)
carry amino acids to ribosomes
c)
help with RNA splicing
d)
make up ribosomes
28.
what does rRNA do?
a)
carry info from genes to ribosomes
b)
carry amino acids to ribosomes
c)
help with RNA splicing
d)
make up ribosomes
29.
Which type of RNA contains the codons?
a)
mRNA
b)
tRNA
c)
aminoacyl-tRNA
d)
rRNA
30.
Which of these contains the anti-codon?
a)
mRNA
b)
tRNA
c)
rRNA
d)
Your little sister
31.
Where does transcription take place?
a)
nucleus
b)
ribosome
c)
cytoplasm
d)
smooth ER
32.
The process of making mRNA from DNA is called.
a)
Replication
b)
Transcription
c)
Translation
d)
Protein synthesis
33.
RNA is different from DNA in ___
a)
RNA is single stranded
b)
RNA has uracil
c)
RNA has the sugar ribos
d)
All of these
34.
The five carbon sugar found in RNA
a)
Ribose
b)
Deoxyribose
c)
Glucose
35.
In messenger RNA, each codon specifies a particular...
a)
Nucleotide
b)
Enzyme
c)
Amino Acid
d)
Promoter
36.
Amino acids are bonded together by a
a)
hydrogen bond
b)
peptide bond
c)
ionic bond
d)
they are not bonded
37.
What is the monomer (building block) of proteins?
a)
Monosacchrides
b)
Polysaccharides
c)
amino acids
d)
Triglycerides
38.
Which is a difference between DNA and RNA
a)
RNA is double stranded
b)
RNA is not made of nucleotides
c)
RNA contains Uracil instead of Thymine
d)
RNA does not contain a sugar
39.
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
40.
A nitrogenous base is an important component of the nucleotide making up DNA. Which of the following correctly lists the four possible nitrogenous bases in DNA?
a)
glutamine, proline, tyrosine, phenylalanine
b)
adenine,guanine,cytosine,thymine
c)
leucine,proline,tyrosine,phenylalanine
d)
adenine,guanine,cytosine,uracil
41.
In comparison to DNA, mRNA is
a)
Shorter
b)
Longer
c)
The same length
d)
Double stranded
42.
Which is NOT required to make proteins
a)
DNA
b)
RNA
c)
Ribosomes
d)
lysosomes
43.
What do we need proteins for
a)
To make lipids
b)
to make carbohydrates
c)
Energy
d)
Almost everthing
44.
How many parts make up a Nucleotide?
a)
One
b)
Two
c)
Three
d)
Four
45.
What base does Adenine pair with?
a)
Guanine
b)
Cytosine
c)
Thymine
d)
Deoxyribose
46.
What base does Cytosine pair with?
a)
Guanine
b)
Thymine
c)
Adenine
d)
Ribose
47.
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
48.
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
49.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
50.
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
51.
One human disease is caused by a change in one codon in a gene from GAA to GUA. The disease is a result of
a)
a mutation
b)
crossing-over
c)
a meiosis error
d)
polyploidy
52.
Where does protein synthesis takes place?
a)
vacuole
b)
ribosome
c)
chloroplast
d)
mitochondria
53.
What is hemophilia?
a)
a severe form of the common cold
b)
another name for Darwin's idea of Natural Selection
c)
an inherited disease that is caused by the absence of a blood clotting factor
d)
someone with both male and female sex organs
54.
What is a characteristic of sickle cell anemia?
a)
Makes your red blood cells twice the size of normal RBCs.
b)
Makes your red bloods cells look like a crescent moon.
c)
It means that you are very healthy.
d)
excessive bleeding.
55.
Which autosomal recessive genetic disease can be treated with a strict diet?
a)
red-green colorblindness
b)
PKU
c)
Huntington's disease
d)
Trisomy 21
56.
How does Cystic Fibrosis occur?
a)
autosomal recessive
b)
sex-linked recessive
c)
autsomal mutation
d)
nondisjunction (extra 21st chromosome)
57.
What is an effect of Cystic Fibrosis?
a)
Blackened gums
b)
Paralyzation
c)
Abnormally thick mucus
d)
Loss of eyesight
58.
a process of changing a gene to treat cystic fibrosis is
a)
Human Genome Project
b)
genome
c)
biotechnology
d)
gene therapy
59.
This disorder results in a female with a single X chromosome.
a)
Down syndrome
b)
Turner's syndrome
c)
Klinefelter's syndrome
d)
ALS
60.
This disorder results in a male with an extra X chromosome.
a)
Down syndrome
b)
Turner's syndrome
c)
Klinefelter's syndrome
d)
ALS
61.
The results of the karyotype indicate that an individual has 3 chromosome #21. Which of the following genetic disorders do they have?
a)
Edwards Syndrome
b)
Patau's Syndrome
c)
Down's Syndrome
d)
Klinefelter's Syndrome
62.
The sex chromosomes of an individual with Klinefelter syndrome are
a)
XXY
b)
XY
c)
XXX
d)
XX
63.
The chromosomes that determine all traits, except gender are called:
a)
Karyotypes
b)
Autosomes
c)
Sex Chromosomes
64.
How many total chromosomes are shown in a normal human karyotype?
a)
2
b)
46
c)
44
d)
23
65.
Phenylketonuria (PKU) is an inability to digest phenylalanine which can cause irreversible brain damage.
a)
True
b)
False
66.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%
67.
What percentage of the offspring will have this recessive disease?
a)
0%
b)
25%
c)
50%
d)
75%
68.
Disorder when blood cells are misshapen, resulting in a decrease of oxygen and caused by a defective allele for a polypeptide in hemoglobin
a)
Duschenne's muscular dystrophy
b)
Turner's Syndrome
c)
sickle cell anemia
d)
Down Syndrome
69.
illustration shows.
a)
sickle cell
b)
hemophilia
c)
turner's
d)
tay-sachs.
70.
The lack of pigment production which can also cause photophobic
a)
tay-sachs
b)
cystic fibrous
c)
albinism
d)
progeria
71.
Karyotype depicts
a)
Turner's
b)
Edward's
c)
Klinefelter's
d)
Down's Syndrome
72.
Karyotype depicts
a)
turner's
b)
edward's
c)
klinefelter's
d)
Down's
73.
karyotype depicts
a)
Turner's
b)
Edward's
c)
klinefelter's
d)
Down's Syndrome
74.
People that do not have the ability to distinguish hues are considered to have _
a)
progeria
b)
cystic fibrous
c)
tay-sachs
d)
colorblindness
100 %
