Question 1

Enzymes used in genetic engineering to cleave DNA are called

Accepted Answer

A) restriction enzymes 
B) ligases. 
C) hydrolases. 
D) lyases. 
E) synthases. 
A) restriction enzymes 
B) ligases. 
C) hydrolases. 
D) lyases. 
E) synthases.

Question 2

The function of the telomeres is

Accepted Answer

A) protection of the DNA that actually codes useful information. 
B) addition of nucleotides to the DNA molecule. 
C) prevention of interaction between DNA and RNA. 
D) initiation of replication of DNA. 
E) initiation of production of mRNA from DNA. 
A) protection of the DNA that actually codes useful information. 
B) addition of nucleotides to the DNA molecule. 
C) prevention of interaction between DNA and RNA. 
D) initiation of replication of DNA. 
E) initiation of production of mRNA from DNA.

Question 3

A gene mutation that involves a change of one base in the DNA is called a _______ mutation

Accepted Answer

A) missense 
B) frameshift 
C) point 
D) nonsense 
A) missense 
B) frameshift 
C) point 
D) nonsense

Question 4

A gene mutation that involves a change in the DNA sequence that still specifies for the same amino acid is called a ________ mutation

Accepted Answer

A) frameshift 
B) silent 
C) point 
D) nonsense 
A) frameshift 
B) silent 
C) point 
D) nonsense

Question 5

The use of prenatal DNA testing followed by an attempt to alter a specific gene to prevent an inherited disease would be classified as

Accepted Answer

A) genetic engineering. 
B) bioinformatics. 
C) gene therapy. 
D) pharmacogenomics. 
E) pharmacogenetics. 
A) genetic engineering. 
B) bioinformatics. 
C) gene therapy. 
D) pharmacogenomics. 
E) pharmacogenetics.

Question 6

The removal of a gene from one organism and incorporating it into the DNA of another is called

Accepted Answer

A) polymerase chain reaction. 
B) recombinant DNA. 
C) genetic selection. 
D) electrophoresis. 
E) mutation. 
A) polymerase chain reaction. 
B) recombinant DNA. 
C) genetic selection. 
D) electrophoresis. 
E) mutation.

Question 7

According to the current working draft of the human genome,which of the following statements is(are)correct?
I.The human genome contains at least 100,000 genes.
II.One gene can code for several different proteins.
III.Approximately 50% of the genome is "junk" DNA.
IV.At least 200 human genes are identical to genes of bacteria.

Accepted Answer

A) None of the statements is correct. 
B) All of the statements are correct. 
C) I,II,and IV are correct. 
D) II,III,and IV are correct. 
E) I,III,and IV are correct. 
A) None of the statements is correct. 
B) All of the statements are correct. 
C) I,II,and IV are correct. 
D) II,III,and IV are correct. 
E) I,III,and IV are correct.

Question 8

The statement "Single-nucleotide polymorphisms are not as serious as mutations" is

Accepted Answer

A) true,because SNPs only result in minor variations between individuals. 
B) true,because SNPs can result in serious diseases such as sickle-cell anemia. 
C) false,because SNPs only result in minor variations between individuals. 
D) false,because SNPs can result in serious diseases such as sickle-cell anemia. 
E) impossible to evaluate because SNPs and mutations are not related. 
A) true,because SNPs only result in minor variations between individuals. 
B) true,because SNPs can result in serious diseases such as sickle-cell anemia. 
C) false,because SNPs only result in minor variations between individuals. 
D) false,because SNPs can result in serious diseases such as sickle-cell anemia. 
E) impossible to evaluate because SNPs and mutations are not related.

Question 9

A technique that sorts amino acids or DNA fragments on the basis of their size is

Accepted Answer

A) polymerase chain reaction. 
B) recombinant DNA. 
C) genetic selection. 
D) electrophoresis. 
E) mutation. 
A) polymerase chain reaction. 
B) recombinant DNA. 
C) genetic selection. 
D) electrophoresis. 
E) mutation.

Question 10

Explain the difference between polymorphisms and mutations.

Accepted Answer

A mutation is an error or variation in b

Question 11

The molecular basis of a mutation is most closely linked to a

Accepted Answer

A) defect in the transcription of a genetic message to mRNA. 
B) change in the sequence of bases on a DNA molecule. 
C) defect in the rRNA of ribosomes. 
D) misplaced stop codon. 
E) All statements are incorrect. 
A) defect in the transcription of a genetic message to mRNA. 
B) change in the sequence of bases on a DNA molecule. 
C) defect in the rRNA of ribosomes. 
D) misplaced stop codon. 
E) All statements are incorrect.

Question 12

Which of the following is a coding portion of DNA?

Accepted Answer

A) exon 
B) centromere 
C) intron 
D) telomere 
E) none of the above 
A) exon 
B) centromere 
C) intron 
D) telomere 
E) none of the above

Question 13

Circular strands of DNA located in the cytoplasm of bacterial cells are called

Accepted Answer

A) plastids. 
B) plasmids. 
C) palindromes. 
D) chromosomes. 
E) primer. 
A) plastids. 
B) plasmids. 
C) palindromes. 
D) chromosomes. 
E) primer.

Question 14

Discuss the importance of telomeres in cell death and in cancer.

Accepted Answer

Telomeres are non-coding sequences of nu

Question 15

The portion of a DNA molecule that does not code for proteins is called a(an)

Accepted Answer

A) intron. 
B) exon. 
C) sticky end. 
D) codon. 
E) primer. 
A) intron. 
B) exon. 
C) sticky end. 
D) codon. 
E) primer.

Question 16

All of the following terms are associated with recombinant DNA except

Accepted Answer

A) plasmids. 
B) bacterial cells. 
C) endonuclease. 
D) hydrogen bonding. 
E) restriction enzymes. 
A) plasmids. 
B) bacterial cells. 
C) endonuclease. 
D) hydrogen bonding. 
E) restriction enzymes.

Question 17

The use of DNA testing to determine which antibiotic will have the fewest side effects in a particular individual would be classified as

Accepted Answer

A) genetic engineering. 
B) bioinformatics. 
C) gene therapy. 
D) bioethics. 
E) pharmacogenetics. 
A) genetic engineering. 
B) bioinformatics. 
C) gene therapy. 
D) bioethics. 
E) pharmacogenetics.

Question 18

A mutation is

Accepted Answer

A) an error in base sequence that is repeated in each replication or transcription of DNA. 
B) something that causes an error in the nucleotide sequence in DNA. 
C) something that causes abnormal growth in embryos. 
D) something that causes abnormal and excessive cell division. 
E) excessive cell division leading to growth of tumors. 
A) an error in base sequence that is repeated in each replication or transcription of DNA. 
B) something that causes an error in the nucleotide sequence in DNA. 
C) something that causes abnormal growth in embryos. 
D) something that causes abnormal and excessive cell division. 
E) excessive cell division leading to growth of tumors.

Exam 26: Genomics

Enzymes used in genetic engineering to cleave DNA are called

The function of the telomeres is

A gene mutation that involves a change of one base in the DNA is called a _______ mutation

A gene mutation that involves a change in the DNA sequence that still specifies for the same amino acid is called a ________ mutation

The use of prenatal DNA testing followed by an attempt to alter a specific gene to prevent an inherited disease would be classified as

The removal of a gene from one organism and incorporating it into the DNA of another is called

The statement "Single-nucleotide polymorphisms are not as serious as mutations" is

A technique that sorts amino acids or DNA fragments on the basis of their size is

Explain the difference between polymorphisms and mutations.

The molecular basis of a mutation is most closely linked to a

Which of the following is a coding portion of DNA?

Circular strands of DNA located in the cytoplasm of bacterial cells are called

Discuss the importance of telomeres in cell death and in cancer.

The portion of a DNA molecule that does not code for proteins is called a(an)

All of the following terms are associated with recombinant DNA except

The use of DNA testing to determine which antibiotic will have the fewest side effects in a particular individual would be classified as

A mutation is

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