Question 1

Which of the following is not a level of regulation for gene expression?

Accepted Answer

A)   Pretranscriptional
B)   Transcriptional
C)   Posttranscriptional
D)   Pretranslational
E)   TranslationalF) A) and C)
G) C) and D)

Question 2

What is the role of the enzyme ligase in DNA replication?

Accepted Answer

A)   It unzips the double-stranded DNA.
B)   It seals any breaks in the sugar-phosphate backbone.
C)   It breaks the hydrogen bonds that hold the two strands of the DNA together.
D)   It matches new bases to the old strand by complementary base pairing.
E)   It folds the DNA into a coiled structure.F) None of the above
G) A) and D)

Question 3

The "r" in "rRNA" stands for reticulum RNA because this type of RNA is associated with the endoplasmic reticulum.

Accepted Answer

A) True 
 B)False

Question 4

How many genes did researchers think the human genome contained? How many did it contain?

Accepted Answer

A)   3 billion; 80,000
B)   1 million; 1 million
C)   20,500; 80,000
D)   80,000; 20,500
E)   125 million; 1 millionF) D) and E)
G) A) and B)

Question 5

To transcribe something is to make an identical copy,i.e.,if the original is DNA,the transcribed copy is also DNA.

Accepted Answer

A) True 
 B)False

Question 6

How is the recombinant product procured from transgenic bacteria? Transgenic goats?

Accepted Answer

A)   eat them, from growth media
B)   from growth media, drink milk
C)   eat them, eat them
D)   drink milk, drink milk
E)   from growth media, from growth mediaF) D) and E)
G) A) and B)

Question 7

Which of the following is not an application of PCR?

Accepted Answer

A)   study evolutionary history
B)   study mummies
C)   crime scene investigations
D)   treat cancer
E)   detect a genetic disorderF) D) and E)
G) A) and D)

Question 8

Both DNA and RNA are

Accepted Answer

A)   found in the cytoplasm.
B)   transcribed.
C)   translated.
D)   found in the nucleus.
E)   considered the genetic material of the cell.F) A) and E)
G) B) and C)

Question 9

Which of the following is not an amino acid?

Accepted Answer

A)   glycine
B)   tryptophan
C)   alanine
D)   valine
E)   uracilF) C) and E)
G) A) and E)

Question 10

Which of the following nucleotide sequences could give rise to the amino acid sequence alanine-asparatate-glycine? Assume that translation initiation has already occurred.

Accepted Answer

A)   GUUAAGAGG
B)   GCCGACGGC
C)   CACCGCCGA
D)   GAUGGUGCU
E)   UUUUAAUGGF) C) and D)
G) None of the above

Question 11

How many codons are there for leucine?

Accepted Answer

A)   two
B)   three
C)   four
D)   five
E)   sixF) C) and E)
G) A) and B)

Question 12

Researchers found 3 genes on chromosome 22 in chimpanzees that,when compared to our human genes,have given us insight into our evolution.What were those three genes?

Accepted Answer

A)   genes for speech development, hearing, and smell
B)   genes for chest size, cranial size, and leg length
C)   genes for taste, opposable thumbs, and bipedalism
D)   genes for speech development, opposable thumbs, and leg length
E)   genes for food preference, bipedalism, and cranial sizeF) A) and E)
G) A) and D)

Question 13

What is the goal of functional genomics?

Accepted Answer

A)   to determine all of the human genome sequence
B)   to determine the genome sequence of other organisms useful to humans
C)   to determine the purpose of our genes and how they form a human being
D)   to determine how all the proteins within the cell interact
E)   to carry out gene therapy for human diseasesF) A) and E)
G) A) and B)

Question 14

The sugar in DNA is deoxyribose while the sugar in RNA is ribose.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following statements about PCR is not true?

Accepted Answer

A)   PCR stands for "polymerizing copies of RNA".
B)   PCR can create millions of copies of a segment of DNA in a test tube.
C)   PCR uses DNA polymerase.
D)   The amount of DNA doubles with each replication cycle.
E)   The target is repeatedly replicated.F) D) and E)
G) None of the above

Question 16

If the codon is CCA,what is the anticodon and what amino acid will be inserted?

Accepted Answer

A)   CCA, proline
B)   GGU, proline
C)   GGT, glycine
D)   ACC, threonine
E)   UGG, tryptophanF) B) and D)
G) A) and C)

Question 17

Which of the following is the primary goal of bioinformatics?

Accepted Answer

A)   to find significant patterns in the information gained from DNA sequencing and proteomics
B)   to input DNA and protein sequences into a computer
C)   to model the three-dimensional shape of cellular proteins
D)   to obtain the sequence of all the noncoding regions of the DNA
E)   to insert genetic material into human cells for the treatment of a disorderF) C) and D)
G) A) and E)

Question 18

What enzyme is responsible for transcribing RNA?

Accepted Answer

A)   helicase
B)   DNA polymerase
C)   RNA polymerase
D)   ligase
E)   proteaseF) A) and B)
G) A) and C)

Question 19

It only takes a matter of several hours to sequence 1000 base-pair sections of DNA.

Accepted Answer

A) True 
 B)False

Question 20

How many different amino acids are commonly found in proteins?

Accepted Answer

A)   5
B)   10
C)   20
D)   50
E)   over 100F) A) and D)
G) A) and C)

Exam 21: DNA Biology and Technology

How is the recombinant product procured from transgenic bacteria? Transgenic goats?

Correct AnswerverifiedShow Answer

What enzyme is responsible for transcribing RNA?

Correct AnswerverifiedShow Answer

Which of the following is the primary goal of bioinformatics?

Correct AnswerverifiedShow Answer

How many codons are there for leucine?

Correct AnswerverifiedShow Answer

It only takes a matter of several hours to sequence 1000 base-pair sections of DNA.

Correct AnswerverifiedShow Answer

How many different amino acids are commonly found in proteins?

Correct AnswerverifiedShow Answer

Which of the following nucleotide sequences could give rise to the amino acid sequence alanine-asparatate-glycine? Assume that translation initiation has already occurred.

Correct AnswerverifiedShow Answer

Which of the following is not an application of PCR?

Correct AnswerverifiedShow Answer

How many genes did researchers think the human genome contained? How many did it contain?

Correct AnswerverifiedShow Answer

Which of the following statements about PCR is not true?

Correct AnswerverifiedShow Answer

Researchers found 3 genes on chromosome 22 in chimpanzees that,when compared to our human genes,have given us insight into our evolution.What were those three genes?

Correct AnswerverifiedShow Answer

To transcribe something is to make an identical copy,i.e.,if the original is DNA,the transcribed copy is also DNA.

Correct AnswerverifiedShow Answer

Both DNA and RNA are

Correct AnswerverifiedShow Answer

What is the role of the enzyme ligase in DNA replication?

Correct AnswerverifiedShow Answer

If the codon is CCA,what is the anticodon and what amino acid will be inserted?

Correct AnswerverifiedShow Answer

The "r" in "rRNA" stands for reticulum RNA because this type of RNA is associated with the endoplasmic reticulum.

Correct AnswerverifiedShow Answer

The sugar in DNA is deoxyribose while the sugar in RNA is ribose.

Correct AnswerverifiedShow Answer

Which of the following is not an amino acid?

Correct AnswerverifiedShow Answer

Which of the following is not a level of regulation for gene expression?

Correct AnswerverifiedShow Answer

What is the goal of functional genomics?

Correct AnswerverifiedShow Answer

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