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Which of the following can help reduce the risk of a late stage breast
cancer diagnosis?
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Question 1
Biology Practice test 2 Exam Questions and
Answers
Due Mar 31 at 11:59pm Points 46 Questions 46
Available Mar 30 at 12:01am - Apr 2 at 11:59pm 4 days Time Limit 60 Minutes
Allowed Attempts 2
Instructions
Practice Exam 2
This is a practice exam. It does not count for course points, but it will allow you to practice and see where
you might need to study a little more. You will be able to see your score and answers immediately, and
you can take a 2nd attempt if you wish. If you have questions about the practice exam, please get them
answered before the actual exam opens (we can't answer questions about the course material while the
real exam is open). There are 46 questions and you have an hour to complete the practice exam once
you open it, just like on the actual exam. NOTE: Some questions include images. The images may
not show up on a mobile device. Please use Chrome or Firefox on a desktop or laptop computer
to ensure that you can view the images.
Attempt History
Attempt Time Score
LATEST Attempt 1 58 minutes 37 out of 46
Score for this attempt: 37 out of 46
Submitted Apr 2 at 8:42am
This attempt took 58 minutes.
Question 2
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What amino acid is encoded by the mRNA codon UAU?
Coorrrecctt!
Tyr
Asn
Coorrrecctt!
Regular mammograms
Regular Pap tests
The HPV vaccine
Avoiding UV light
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100% (all 13)
At least 25 % (at least 3 out of 13)
~55% (7 out of 13)
~85% (11 out of13)
How many of the CODIS STRs need to match between a suspect and
crime scene DNA evidence in order to be sure that the suspect left the
evidence?
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Question 6
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Question 7
Coorrrecctt!
DNA and protein
DNA and carbohydrates
DNA and lipids
Protein and carbohydrates
What two types of molecules make up chromosomes?
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Question 5
Coorrrecctt!
Ashkenazi Jewish heritage
Having the first period at age 15
Having a sister-in-law diagnosed with breast cancer at age 35
Being 27 years old
Which of the following would be most concerning about breast cancer risk?
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Question 8
The Pfizer vaccine is a , which is into a protein.
gene; transcribed
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Question 9
A woman has been diagnosed with breast cancer at age 37. Her first
period was at age 14. Her mother was diagnosed with breast cancer at age
42. Is this woman's cancer more likely to be inherited or sporadic?
Equally likely to be inherited or sporadic
Coorrrecctt!
Inherited
Sporadic
Coorrrecctt!
Zygote; 23
Zygote; 46
Gamete; 46
Ovum; 23
A fertilized egg is known as a(n) and has chromosomes.
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Question 13
What is the mRNA corresponding to the DNA sequence GCC ATA?
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Question 14
Coorrrecctt!
Separates DNA fragments based on their size/length
Identifies the uniquely identifying sequences in a person’s DNA
Makes many copies of (amplifies) specific DNA sequences
Degrades DNA
What does PCR do?
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Question 12
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Silk glands
Mammary glands
Liver cells
Every cell
In a spider, where is the spidrion gene expressed?
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Question 15
Which allele of CFTR encodes a protein that makes it to the membrane but
does not function properly?
WT
orrect Answer
G551D
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Phe508del
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Question 16
Coorrrecctt!
CGG UAU
GCC AUA
GCC ATA
CGG TAT
Coorrrecctt!
It depends on whether the person is biologically male or female
How many chromosomes are in the nucleus of a skin cell?
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Question 20
How many breast cancer alleles are detected in the 23andme breast
cancer test?
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Question 21
Coorrrecctt!
DNA codons
DNA coding sequences
mRNA codons
Amino acids
What is “read” by ribosomes during translation?
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Question 19
orrect Answe
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A mouse regulatory sequence and the jellyfish GFP regulatory sequence
A mouse coding sequence and the jellyfish GFP coding sequence
A mouse coding sequence and the jellyfish GFP regulatory sequence
A mouse regulatory sequence and the jellyfish GFP coding sequence
r
To express jellyfish green fluorescent protein (GFP) in mice you need a
transgene with
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Question 22
The vast majority of all cancer is and occurs.
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Sporadic; at older ages
Inherited; at younger ages
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Question 23
Coorrrecctt!
orrect Answe
oou Annswwerreed
heterozygous
homozygous dominant
heterozygous recessive
homozygous recessive
r
In order for someone to have the phenotype of a recessive trait, they must
have a genotype.
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Question 27
A person with a dominant genetic disease has a
genotype.
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Question 28
Coorrrecctt!
Far more so than DNA profiling
Not very, far less than DNA profiling
About the same as DNA profiling
How credible is bite mark analysis?
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Question 26
Coorrrecctt!
It just progresses through the cell cycle anyway
It dies by apoptosis
It will permanently stall and enter a state of “stasis”
If a normal cell cannot fix a problem (like DNA damage), what happens?
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Question 29
oou Annswwerered
o
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homozygous dominant
heterozygous
homozygous recessive or homozygous dominant
orrect Answer
homozygous dominant or heterozygous
A carrier for CF marries someone who is homozygous dominant. What is
the probability that their first child will have CF?
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Question 30
Coorrrecctt!
No
It depends on whether it has spread throughout the body
Yes
Can a risk for sporadic breast cancer be detected with a 23andme breast
cancer test?
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Question 34
An STR is
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A short tandem repeat
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Question 35
ATRyn is a recombinant form of that is produced in
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antithrombin; goats
antithrombin; yeast
coronavirus spike protein; yeast
insulin; goats
Coorrrecctt!
G-C
T-A
C-G
A-C
Which of the following is NOT a base pair in DNA?
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Question 36
A woman is “negative” for the 23andme breast cancer test. Does this mean
that she will NOT develop cancer?
Coorrrecctt!
No, she could have inherited other alleles, or accumulate mutations over
her lifetime
Yes, she is free of cancer risk
No, she could still accumulate mutations over her lifetime
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Question 37
A DNA sequence that is unique for every person on the planet
A way to amplify DNA for forensics
A DNA sequence that encodes a key enzyme in cellular metabolism
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An inherited form of cancer
A tumor involving blood cells
A sequence that controls when, where how much of a protein is made
A version of a gene with a different nucleotide sequence
What is an allele?
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Question 41
On gel electrophoresis, which fragments run the furthest from the “start”?
The largest/longest
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Question 42
If a person has a G551D CFTR allele, what treatment is possible?
Lumacaftor
Unfortunately, there is not yet a treatment for people with this allele
Coorrrecctt!
Ivacaftor
Atryn
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What % of breast cancer is sporadic?
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Question 43
Which of the following would NOT be a source of DNA for forensic
analysis?
Semen
Epithelial cells shed from skin
Epithelial cells in saliva
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Red blood cells
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Question 44
The ones from the paternal chromosomes
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The smallest/shortest
The ones from the maternal chromosomes
