Question 1

Which food item is least likely to be considered genetically modified?

Accepted Answer

A)  microwave popcorn 
B)  potato chips 
C)  a candy bar 
D)  a head of broccoli 
A)  microwave popcorn 
B)  potato chips 
C)  a candy bar 
D)  a head of broccoli

Question 2

Which nitrogenous base pairs with adenine in a DNA molecule?

Accepted Answer

A)  cytosine 
B)  thymine 
C)  uracil 
D)  guanine 
A)  cytosine 
B)  thymine 
C)  uracil 
D)  guanine

Question 3

What does gene regulation in eukaryotic cells include?

Accepted Answer

A)  activators that help RNA polymerase bind to the promoter 
B)  repressors that prevent DNA polymerase from binding 
C)  activation of the X chromosome 
D)  degradation of nucleases by mRNA 
A)  activators that help RNA polymerase bind to the promoter 
B)  repressors that prevent DNA polymerase from binding 
C)  activation of the X chromosome 
D)  degradation of nucleases by mRNA

Question 4

What is the nucleotide sequence on a section of DNA where transcription begins?

Accepted Answer

A)  polymerase 
B)  palindrome 
C)  promoter 
D)  codon 
A)  polymerase 
B)  palindrome 
C)  promoter 
D)  codon

Question 5

Which situation would allow gene expression to continue?

Accepted Answer

A)  X-chromosome inactivation 
B)  an increase in proteases 
C)  an increase in repressor proteins 
D)  a reduction in nucleases 
A)  X-chromosome inactivation 
B)  an increase in proteases 
C)  an increase in repressor proteins 
D)  a reduction in nucleases

Question 6

What are genetically modified organisms (GMOs) also called?

Accepted Answer

A)  artificial crop plants 
B)  artificially selected organisms 
C)  transgenic organisms 
D)  mutant crop plants 
A)  artificial crop plants 
B)  artificially selected organisms 
C)  transgenic organisms 
D)  mutant crop plants

Question 7

What is pharming?

Accepted Answer

A)  the use of genetically modified crops with organic pesticides 
B)  the use of genetically modified organisms to produce medical treatments 
C)  the use of gene guns to produce genetically modified fish species 
D)  the use of genetically modified organisms that are photosynthetic 
A)  the use of genetically modified crops with organic pesticides 
B)  the use of genetically modified organisms to produce medical treatments 
C)  the use of gene guns to produce genetically modified fish species 
D)  the use of genetically modified organisms that are photosynthetic

Question 8

Which nitrogenous base percentage is complementary to the 22% guanine found in a double-stranded DNA molecule?

Accepted Answer

A)  22% thymine 
B)  22% cytosine 
C)  44% adenine 
D)  48% thymine 
A)  22% thymine 
B)  22% cytosine 
C)  44% adenine 
D)  48% thymine

Question 9

Which molecule remains in the nucleus during protein synthesis?

Accepted Answer

A)  DNA 
B)  tRNA 
C)  mRNA 
D)  rRNA 
A)  DNA 
B)  tRNA 
C)  mRNA 
D)  rRNA

Question 10

What regulates the rate of production of cellular proteins within each cell?

Accepted Answer

A)  redundancy in the genetic code 
B)  frameshift mutations 
C)  gene expression 
D)  ambiguity in the genetic code 
A)  redundancy in the genetic code 
B)  frameshift mutations 
C)  gene expression 
D)  ambiguity in the genetic code

Question 11

What ability is found in stem cells that are totipotent?

Accepted Answer

A)  Totipotent cells can only develop into blood cells. 
B)  Totipotent cells can develop into any cell type. 
C)  Totipotent cells can transform skin into muscle cells. 
D)  Totipotent cells can change the genetic code of an organism. 
A)  Totipotent cells can only develop into blood cells. 
B)  Totipotent cells can develop into any cell type. 
C)  Totipotent cells can transform skin into muscle cells. 
D)  Totipotent cells can change the genetic code of an organism.

Question 12

Which is an example of gene therapy?

Accepted Answer

A)  replacing a failing heart with a new heart from a genetically matched donor 
B)  injecting human factor VIII protein into hemophiliacs with a defective factor VIII gene 
C)  infecting a cystic fibrosis patient with a virus carrying a working copy of the cystic fibrosis gene 
D)  providing therapeutic drugs to a patient experiencing high blood pressure 
A)  replacing a failing heart with a new heart from a genetically matched donor 
B)  injecting human factor VIII protein into hemophiliacs with a defective factor VIII gene 
C)  infecting a cystic fibrosis patient with a virus carrying a working copy of the cystic fibrosis gene 
D)  providing therapeutic drugs to a patient experiencing high blood pressure

Question 13

In what tissues can adult stem cells be found?

Accepted Answer

A)  Stem cells are found only in embryonic tissues. 
B)  Adult stem cells can be found in bone marrow and the liver. 
C)  Stem cells can be found in any tissue that reproduces. 
D)  Adult stem cells are found in hair and fingernail tissues. 
A)  Stem cells are found only in embryonic tissues. 
B)  Adult stem cells can be found in bone marrow and the liver. 
C)  Stem cells can be found in any tissue that reproduces. 
D)  Adult stem cells are found in hair and fingernail tissues.

Question 14

If a DNA sequence of a gene reads, in part, TAACAGGTCA, what is the sequence of the complementary strand of DNA?

Accepted Answer

A)  ATTGTCCAGT 
B)  AUUGUCCAGU 
C)  UUACAGGUCC 
D)  CTTGTGGACC 
A)  ATTGTCCAGT 
B)  AUUGUCCAGU 
C)  UUACAGGUCC 
D)  CTTGTGGACC

Question 15

What process copies a sequence of DNA nucleotides into a complementary sequence of RNA nucleotides?

Accepted Answer

A)  translation 
B)  mutation 
C)  transcription 
D)  duplication 
A)  translation 
B)  mutation 
C)  transcription 
D)  duplication

Question 16

What signal, when present at the ribosome, causes protein synthesis to end?

Accepted Answer

A)  DNA 
B)  tRNA 
C)  a stop codon 
D)  RNA polymerase 
A)  DNA 
B)  tRNA 
C)  a stop codon 
D)  RNA polymerase

Question 17

Which complementary base pairings occur between DNA and RNA?

Accepted Answer

A)  A to T and C to G 
B)  T to C and A to G 
C)  G to C and A to U 
D)  C to U and A to T 
A)  A to T and C to G 
B)  T to C and A to G 
C)  G to C and A to U 
D)  C to U and A to T

Question 18

Which RNA molecule carries the sequence of nucleotides that determines the order of amino acids in a protein?

Accepted Answer

A)  transfer RNA 
B)  ribosomal RNA 
C)  messenger RNA 
D)  translator RNA 
A)  transfer RNA 
B)  ribosomal RNA 
C)  messenger RNA 
D)  translator RNA

Question 19

Which situation may result from genetically modifying foods?

Accepted Answer

A)  rice that allows greater synthesis of vitamin A 
B)  calorie-free potato chips 
C)  a tomato that tastes like a melon 
D)  lettuce that doesn't require water to grow 
A)  rice that allows greater synthesis of vitamin A 
B)  calorie-free potato chips 
C)  a tomato that tastes like a melon 
D)  lettuce that doesn't require water to grow

Question 20

Which structure "unzips" the double helix of DNA?

Accepted Answer

A)  an anticodon 
B)  mRNA 
C)  tRNA 
D)  RNA polymerase 
A)  an anticodon 
B)  mRNA 
C)  tRNA 
D)  RNA polymerase

Exam 9: Genetically Modified Organisms: Gene Expression, Mutation,

Which food item is least likely to be considered genetically modified?

Which nitrogenous base pairs with adenine in a DNA molecule?

What does gene regulation in eukaryotic cells include?

What is the nucleotide sequence on a section of DNA where transcription begins?

Which situation would allow gene expression to continue?

What are genetically modified organisms (GMOs) also called?

What is pharming?

Which nitrogenous base percentage is complementary to the 22% guanine found in a double-stranded DNA molecule?

Which molecule remains in the nucleus during protein synthesis?

What regulates the rate of production of cellular proteins within each cell?

What ability is found in stem cells that are totipotent?

Which is an example of gene therapy?

In what tissues can adult stem cells be found?

If a DNA sequence of a gene reads, in part, TAACAGGTCA, what is the sequence of the complementary strand of DNA?

What process copies a sequence of DNA nucleotides into a complementary sequence of RNA nucleotides?

What signal, when present at the ribosome, causes protein synthesis to end?

Which complementary base pairings occur between DNA and RNA?

Which RNA molecule carries the sequence of nucleotides that determines the order of amino acids in a protein?

Which situation may result from genetically modifying foods?

Which structure "unzips" the double helix of DNA?

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