Question 1

Which of the following is the protein-making factory in the cell?

Accepted Answer

A)  ribosomal RNA (rRN
A)  
B)  RNA polymerase 
C)  messenger RNA (mRN
A)  
D)  transfer RNA (tRN
A)  
E)  All of these are the protein-making factories. 
A)  ribosomal RNA (rRN
A)  
B)  RNA polymerase 
C)  messenger RNA (mRN
A)  
D)  transfer RNA (tRN
A)  
E)  All of these are the protein-making factories.

Question 2

About how many base pairs are in the human genome?

Accepted Answer

A)  hundreds of thousands 
B)  millions 
C)  tens of millions 
D)  hundreds of millions 
E)  billions 
A)  hundreds of thousands 
B)  millions 
C)  tens of millions 
D)  hundreds of millions 
E)  billions

Question 3

What type of bonds are found joining two nucleotides in a strand of DNA?

Accepted Answer

A)  hydrogen bonds 
B)  N-glycosidic bonds 
C)  phosphodiester bonds 
D)  peptide bonds 
E)  O-glycosidic bonds 
A)  hydrogen bonds 
B)  N-glycosidic bonds 
C)  phosphodiester bonds 
D)  peptide bonds 
E)  O-glycosidic bonds

Question 4

Which of these molecules below are pyrimidines?

Accepted Answer

A)  I and III 
B)  II and IV 
C)  I, III, and V 
D)  III only 
E)  All of these molecules are pyrimidines. 
A)  I and III 
B)  II and IV 
C)  I, III, and V 
D)  III only 
E)  All of these molecules are pyrimidines.

Question 5

In recombinant DNA technology,

Accepted Answer

A)  genes from different organisms are combined. 
B)  new genes are created. 
C)  plants are treated with steroid so that they grow larger. 
D)  organisms are given drugs that damage their DNA. 
E)  All of the above 
A)  genes from different organisms are combined. 
B)  new genes are created. 
C)  plants are treated with steroid so that they grow larger. 
D)  organisms are given drugs that damage their DNA. 
E)  All of the above

Question 6

Which of the following is NOT determined by human DNA?

Accepted Answer

A)  the predisposition to some diseases 
B)  natural hair color 
C)  height 
D)  shoe size 
E)  All of the above are determined by DNA. 
A)  the predisposition to some diseases 
B)  natural hair color 
C)  height 
D)  shoe size 
E)  All of the above are determined by DNA.

Question 7

What does letter G represent in the following diagram?

Accepted Answer

A)  mRNA 
B)  the growing protein 
C)  tRNA 
D)  rRNA 
E)  DNA 
A)  mRNA 
B)  the growing protein 
C)  tRNA 
D)  rRNA 
E)  DNA

Question 8

What is the role of HIV protease in HIV infection?

Accepted Answer

A)  It is part of transcription. 
B)  It is part of translation. 
C)  It is the enzyme that attaches to T-cells. 
D)  It makes the capsid. 
E)  It cuts polyproteins into individual proteins and enzymes. 
A)  It is part of transcription. 
B)  It is part of translation. 
C)  It is the enzyme that attaches to T-cells. 
D)  It makes the capsid. 
E)  It cuts polyproteins into individual proteins and enzymes.

Question 9

The molecule below is found in

Accepted Answer

A)  DNA. 
B)  protein. 
C)  steroids. 
D)  RNA. 
E)  starch. 
A)  DNA. 
B)  protein. 
C)  steroids. 
D)  RNA. 
E)  starch.

Question 10

What happens when a particular protein is needed by a cell?

Accepted Answer

A)  The cell dies. 
B)  The gene for that cell is expressed. 
C)  The gene for that cell is replicated. 
D)  The entire DNA strand containing the appropriate gene is expressed. 
E)  The entire DNA strand containing the appropriate gene is replicated. 
A)  The cell dies. 
B)  The gene for that cell is expressed. 
C)  The gene for that cell is replicated. 
D)  The entire DNA strand containing the appropriate gene is expressed. 
E)  The entire DNA strand containing the appropriate gene is replicated.

Question 11

What is the role of RNA polymerase in transcription?

Accepted Answer

A)  It catalyzes the synthesis of a new mRNA molecule. 
B)  It copies the sequence of nucleotides on the template strand of DNA as a complementary sequence of mRNA bases. 
C)  It catalyzes the formation of phosphate ester bonds. 
D)  It is an enzyme. 
E)  All of the above are correct. 
A)  It catalyzes the synthesis of a new mRNA molecule. 
B)  It copies the sequence of nucleotides on the template strand of DNA as a complementary sequence of mRNA bases. 
C)  It catalyzes the formation of phosphate ester bonds. 
D)  It is an enzyme. 
E)  All of the above are correct.

Question 12

In the following cartoon of a DNA double helix, arrow I is pointing to the

Accepted Answer

A)  DNA base pairs. 
B)  hydrogen bonds. 
C)  sugar phosphate backbone. 
D)  complementary base pairs. 
E)  nucleotides. 
A)  DNA base pairs. 
B)  hydrogen bonds. 
C)  sugar phosphate backbone. 
D)  complementary base pairs. 
E)  nucleotides.

Question 13

What has been discovered as a result of the Human Genome Project?

Accepted Answer

A)  the location of genes associated with disease 
B)  the nucleotide sequence of a human 
C)  the arrangement of genes in the genome 
D)  the genes associated with proteins 
E)  All of the above 
A)  the location of genes associated with disease 
B)  the nucleotide sequence of a human 
C)  the arrangement of genes in the genome 
D)  the genes associated with proteins 
E)  All of the above

Question 14

The structure below is a

Accepted Answer

A)  dinucleotide. 
B)  dinucleoside. 
C)  trinucleotide. 
D)  trinucleoside. 
E)  tetranucleoside. 
A)  dinucleotide. 
B)  dinucleoside. 
C)  trinucleotide. 
D)  trinucleoside. 
E)  tetranucleoside.

Question 15

Which of the following statements best describes what occurs during translation?

Accepted Answer

A)  DNA is reproduced. 
B)  Protein is synthesized using DNA as a template. 
C)  Protein is synthesized using mRNA as a template. 
D)  mRNA is synthesized using DNA as a template. 
E)  mRNA is synthesized using protein as a template. 
A)  DNA is reproduced. 
B)  Protein is synthesized using DNA as a template. 
C)  Protein is synthesized using mRNA as a template. 
D)  mRNA is synthesized using DNA as a template. 
E)  mRNA is synthesized using protein as a template.

Question 16

Which of the following statements about DNA transcription is TRUE?

Accepted Answer

A)  Both DNA strands can act as a template for mRNA. 
B)  DNA is transcribed to mRNA from the 5′ end to the 3′ end. 
C)  DNA transcription starts at a start codon. 
D)  The whole DNA strand is always transcribed when a gene on that strand is expressed. 
E)  DNA does not need to unfold before transcription occurs. 
A)  Both DNA strands can act as a template for mRNA. 
B)  DNA is transcribed to mRNA from the 5′ end to the 3′ end. 
C)  DNA transcription starts at a start codon. 
D)  The whole DNA strand is always transcribed when a gene on that strand is expressed. 
E)  DNA does not need to unfold before transcription occurs.

Question 17

In a nucleoside and a nucleotide, a bond forms between a nitrogen base and a sugar. An arrow points to the nitrogen on the base that bonds to the sugar. Which carbon on the sugar bonds to the indicated nitrogen on the base?

Accepted Answer

A)  1F1F1F1S1F1F1F10 
B)  2F1F1F1S1F1F1F10 
C)  3F1F1F1S1F1F1F10 
D)  4F1F1F1S1F1F1F10 
E)  5F1F1F1S1F1F1F10 
A)  1F1F1F1S1F1F1F10 
B)  2F1F1F1S1F1F1F10 
C)  3F1F1F1S1F1F1F10 
D)  4F1F1F1S1F1F1F10 
E)  5F1F1F1S1F1F1F10

Question 18

A mRNA sequence that codes for a protein is 5′-CAA GGG UAC-3′. Which of the following choices is NOT a mutation of this sequence?

Accepted Answer

A)  5′-CAA GCG GUA C-3′ 
B)  5′-CAG GGG UAC-3′ 
C)  5′-GAA GGG UAC-3′ 
D)  5′-CAA GGG UAA-3′ 
E)  These are all mutations. 
A)  5′-CAA GCG GUA C-3′ 
B)  5′-CAG GGG UAC-3′ 
C)  5′-GAA GGG UAC-3′ 
D)  5′-CAA GGG UAA-3′ 
E)  These are all mutations.

Question 19

Which of the following molecules is a nucleotide?

Accepted Answer

A)  I only 
B)  II only 
C)  III only 
D)  I and II 
E)  II and III 
A)  I only 
B)  II only 
C)  III only 
D)  I and II 
E)  II and III

Question 20

Which statement best describes what occurs during DNA replication?

Accepted Answer

A)  A complementary strand of mRNA is produced from a single DNA strand. 
B)  The DNA double helix unfolds, and each strand serves as a template for the synthesis of a new strand of DNA. 
C)  A complementary strand of mRNA is produced from both DNA strands. 
D)  The DNA double helix unfolds, and one strand serves as a template for the synthesis of a new strand of DNA. 
E)  tRNA is activated. 
A)  A complementary strand of mRNA is produced from a single DNA strand. 
B)  The DNA double helix unfolds, and each strand serves as a template for the synthesis of a new strand of DNA. 
C)  A complementary strand of mRNA is produced from both DNA strands. 
D)  The DNA double helix unfolds, and one strand serves as a template for the synthesis of a new strand of DNA. 
E)  tRNA is activated.

Which of the following is the protein-making factory in the cell?

About how many base pairs are in the human genome?

What type of bonds are found joining two nucleotides in a strand of DNA?

Which of these molecules below are pyrimidines?

In recombinant DNA technology,

Which of the following is NOT determined by human DNA?

What does letter G represent in the following diagram?

What is the role of HIV protease in HIV infection?

The molecule below is found in

What happens when a particular protein is needed by a cell?

What is the role of RNA polymerase in transcription?

In the following cartoon of a DNA double helix, arrow I is pointing to the

What has been discovered as a result of the Human Genome Project?

The structure below is a

Which of the following statements best describes what occurs during translation?

Which of the following statements about DNA transcription is TRUE?

In a nucleoside and a nucleotide, a bond forms between a nitrogen base and a sugar. An arrow points to the nitrogen on the base that bonds to the sugar. Which carbon on the sugar bonds to the indicated nitrogen on the base?

A mRNA sequence that codes for a protein is 5′-CAA GGG UAC-3′. Which of the following choices is NOT a mutation of this sequence?

Which of the following molecules is a nucleotide?

Which statement best describes what occurs during DNA replication?

Measuring Matter and Energy

Atomic Structure and Nuclear Radiation

Compounds and Molecules

Chemical Quantities and Chemical Reactions

Changes of State and the Gas Laws

Organic Chemistry: Hydrocarbons

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

Acids and Bases

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Energy and Metabolism

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Exam 14: Nucleotides and Nucleic Acids

Which of the following is the protein-making factory in the cell?

About how many base pairs are in the human genome?

What type of bonds are found joining two nucleotides in a strand of DNA?

Which of these molecules below are pyrimidines?

In recombinant DNA technology,

Which of the following is NOT determined by human DNA?

What does letter G represent in the following diagram?

What is the role of HIV protease in HIV infection?

The molecule below is found in

What happens when a particular protein is needed by a cell?

What is the role of RNA polymerase in transcription?

In the following cartoon of a DNA double helix, arrow I is pointing to the

What has been discovered as a result of the Human Genome Project?

The structure below is a

Which of the following statements best describes what occurs during translation?

Which of the following statements about DNA transcription is TRUE?

In a nucleoside and a nucleotide, a bond forms between a nitrogen base and a sugar. An arrow points to the nitrogen on the base that bonds to the sugar. Which carbon on the sugar bonds to the indicated nitrogen on the base?

A mRNA sequence that codes for a protein is 5′-CAA GGG UAC-3′. Which of the following choices is NOT a mutation of this sequence?

Which of the following molecules is a nucleotide?

Which statement best describes what occurs during DNA replication?

Measuring Matter and Energy

Atomic Structure and Nuclear Radiation

Compounds and Molecules

Chemical Quantities and Chemical Reactions

Changes of State and the Gas Laws

Organic Chemistry: Hydrocarbons

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

Acids and Bases

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Energy and Metabolism

Filters