Question 1

Explain the effect of environmental mutagens in determining whether a woman with a mutation in one of her BRCA genes will actually get cancer.

Accepted Answer

Even if a woman has a mutation in one of...

Question 2

Is the way a protein folds important for its function?

Accepted Answer

A)   Yes, protein function depends on the protein's 3-D structure.
B)   Yes, because DNA mutations are caused by protein folding incorrectly.
C)   No, as long as the sequence is correct.
D)   No, as long as the protein is still soluble.
E)   None of the above.

Question 3

Mutations usually affect a protein's

Accepted Answer

A)   size.
B)   shape.
C)   length.
D)   electrical charge.
E)   longevity.

Question 4

In normal cells,tumor suppressors are

Accepted Answer

A)   oncogenes.
B)   not required.
C)   carcinogens.
D)   required for DNA repair or programmed cell death.
E)   underexpressed.

Question 5

If you avoid dangerous chemicals and radiation for your entire life,you prevent all mutations in your DNA.

Accepted Answer

A) True 
 B)False

Question 6

How many alleles for a single trait are present in each human cell?

Accepted Answer

A)   1
B)   2
C)   23
D)   46
E)   4

Question 7

A newly identified mutation in mice,called "darkened dorsal," causes a dark stripe along the mouse's back.This mutation is located at a specific location on chromosome 2.A different sequence at this same chromosomal position results in a fur color pattern called "nonagouti." Based on this information,darkened dorsal and nonagouti are different

Accepted Answer

A)   genes for fur color.
B)   alleles for the same gene.
C)   mutations of the same chromosome.
D)   chromatids.
E)   All of the above.

Question 8

BRCA1 and BRCA2 are ___________,p53 is a ___________,and Her2 is a __________.

Accepted Answer

A)   tumor-suppressor genes, tumor-suppressor gene, proto-oncogene
B)   tumor-suppressor genes; proto-oncogene; tumor-suppressor gene
C)   proto-oncogenes; tumor-suppressor gene; proto-oncogene
D)   proto-oncogenes; tumor-suppressor gene; tumor-suppressor gene
E)   proto-oncogenes; proto-oncogene; tumor-suppressor gene

Question 9

DNA mutations can

Accepted Answer

A)   be detrimental.
B)   be beneficial.
C)   have no effect.
D)   All of the above.
E)   A or B only

Question 10

In a cell with the following mutations,which would you expect to be MOST likely to cause tumors?

Accepted Answer

A)   BRCA1 and BRCA2
B)   BRCA1 and p53 mutation
C)   BRCA1, BRCA2, Her2, and p53 mutations
D)   BRCA1, BRCA2, and p53 mutations
E)   BRCA1, Her2, and p53 mutations

Question 11

Which sequence is the complementary DNA sequence of ATG GGC CTG?

Accepted Answer

A)   ATG GGC CTG
B)   TAC CCG GAG
C)   TUC CCG GUC
D)   TAC CCG GAC
E)   TAC CCC GAC

Question 12

A mutation is best described as an error in

Accepted Answer

A)   DNA.
B)   mRNA.
C)   protein.
D)   enzymes.
E)   cell division.

Question 13

What is the difference between mutagens and carcinogens?

Accepted Answer

A)   All mutagens are carcinogens.
B)   All carcinogens are mutagens.
C)   Carcinogens are any substance that damages DNA and can lead to cancer.
D)   B and C
E)   None of the above; they are the same thing with different names

Question 14

Permanent activation or overexpression of proto-oncogenes

Accepted Answer

A)   turns tumor suppressors off.
B)   is required for normal cell division.
C)   has been linked to breast cancer.
D)   keeps a cell from dividing.
E)   turns tumor suppressors on.

Question 15

Inherited mutations

Accepted Answer

A)   predispose individuals to cancer.
B)   come from DNA sequence mistakes contained in germ cells.
C)   can come from one's mother or father.
D)   are errors in DNA that go uncorrected.
E)   All of the above.

Question 16

For a mutation to become an allele it must occur in one of three possible locations.What are those three?

Accepted Answer

in the sperm,egg,or ...

Question 17

If one has an inherited allele known to be linked to an increased risk of cancer,what are some suggestions to lower the risk?

Accepted Answer

Answers will vary,but generally,avoid ex...

Question 18

What is a carcinogen?

Accepted Answer

A mutagen that has b...

Question 19

"A person who inherits a mutation in a cell cycle regulatory gene will develop cancer." Is this a true statement? Explain.

Accepted Answer

It takes more than one mutatio...

Question 20

What would happen if a tumor suppressor,such as BRCA1,was mutated?

Accepted Answer

A)   DNA may not be able to be repaired.
B)   The cell cycle could continue without stopping when needed.
C)   Cells would stop dividing and be unable to get through the cell cycle.
D)   A and B only
E)   All of the above.

Exam 10: Mutations and Cancer Fighting Fate

DNA mutations can

Correct Answer
verified

In a cell with the following mutations,which would you expect to be MOST likely to cause tumors?

Correct Answer
verified

Correct Answer
verified

Is the way a protein folds important for its function?

Correct Answer
verified

"A person who inherits a mutation in a cell cycle regulatory gene will develop cancer." Is this a true statement? Explain.

Correct Answer
verified
It takes more than one mutatio...
View Answer

If one has an inherited allele known to be linked to an increased risk of cancer,what are some suggestions to lower the risk?

Correct Answer
verified
Answers will vary,but generally,avoid ex...
View Answer

A mutation is best described as an error in

Correct Answer
verified

Explain the effect of environmental mutagens in determining whether a woman with a mutation in one of her BRCA genes will actually get cancer.

Correct Answer
verified
Even if a woman has a mutation in one of...
View Answer

If you avoid dangerous chemicals and radiation for your entire life,you prevent all mutations in your DNA.

Correct Answer
verified

Inherited mutations

Correct Answer
verified

For a mutation to become an allele it must occur in one of three possible locations.What are those three?

Correct Answer
verified
in the sperm,egg,or ...
View Answer

Mutations usually affect a protein's

Correct Answer
verified

Which sequence is the complementary DNA sequence of ATG GGC CTG?

Correct Answer
verified

In normal cells,tumor suppressors are

Correct Answer
verified

Permanent activation or overexpression of proto-oncogenes

Correct Answer
verified

BRCA1 and BRCA2 are _____,p53 is a _,and Her2 is a ______.

Correct Answer
verified

What would happen if a tumor suppressor,such as BRCA1,was mutated?

Correct Answer
verified

How many alleles for a single trait are present in each human cell?

Correct Answer
verified

What is a carcinogen?

Correct Answer
verified
A mutagen that has b...
View Answer

What is the difference between mutagens and carcinogens?

Correct Answer
verified

Exam 10: Mutations and Cancer Fighting Fate

DNA mutations can

Correct AnswerverifiedShow Answer

In a cell with the following mutations,which would you expect to be MOST likely to cause tumors?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Is the way a protein folds important for its function?

Correct AnswerverifiedShow Answer

"A person who inherits a mutation in a cell cycle regulatory gene will develop cancer." Is this a true statement? Explain.

Correct AnswerverifiedIt takes more than one mutatio...View AnswerShow Answer

If one has an inherited allele known to be linked to an increased risk of cancer,what are some suggestions to lower the risk?

Correct AnswerverifiedAnswers will vary,but generally,avoid ex...View AnswerShow Answer

A mutation is best described as an error in

Correct AnswerverifiedShow Answer

Explain the effect of environmental mutagens in determining whether a woman with a mutation in one of her BRCA genes will actually get cancer.

Correct AnswerverifiedEven if a woman has a mutation in one of...View AnswerShow Answer

If you avoid dangerous chemicals and radiation for your entire life,you prevent all mutations in your DNA.

Correct AnswerverifiedShow Answer

Inherited mutations

Correct AnswerverifiedShow Answer

For a mutation to become an allele it must occur in one of three possible locations.What are those three?

Correct Answerverifiedin the sperm,egg,or ...View AnswerShow Answer

Mutations usually affect a protein's

Correct AnswerverifiedShow Answer

Which sequence is the complementary DNA sequence of ATG GGC CTG?

Correct AnswerverifiedShow Answer

In normal cells,tumor suppressors are

Correct AnswerverifiedShow Answer

Permanent activation or overexpression of proto-oncogenes

Correct AnswerverifiedShow Answer

BRCA1 and BRCA2 are ___________,p53 is a ___________,and Her2 is a __________.

Correct AnswerverifiedShow Answer

What would happen if a tumor suppressor,such as BRCA1,was mutated?

Correct AnswerverifiedShow Answer

How many alleles for a single trait are present in each human cell?

Correct AnswerverifiedShow Answer

What is a carcinogen?

Correct AnswerverifiedA mutagen that has b...View AnswerShow Answer

What is the difference between mutagens and carcinogens?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
It takes more than one mutatio...
View Answer

Correct Answer
verified
Answers will vary,but generally,avoid ex...
View Answer

Correct Answer
verified

Correct Answer
verified
Even if a woman has a mutation in one of...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
in the sperm,egg,or ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

BRCA1 and BRCA2 are _____,p53 is a _,and Her2 is a ______.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A mutagen that has b...
View Answer

Correct Answer
verified