Question 1

A gene is a section of DNA that contains the instructions for making

Accepted Answer

A)  more DNA. 
B)  carbohydrates. 
C)  proteins. 
D)  lipids. 
E)  All of the above are correct. 
A)  more DNA. 
B)  carbohydrates. 
C)  proteins. 
D)  lipids. 
E)  All of the above are correct.

Question 2

Which of the following choices best describes the interaction between DNA and a histone?

Accepted Answer

A)  The negative charges on a histone attract the positive DNA. 
B)  The positive charges on a histone attract the negative DNA. 
C)  Hydrogen bonding occurs between a histone and DNA. 
D)  DNA forms a covalent bond with a histone. 
E)  There is a phosphate bond between a histone and DNA. 
A)  The negative charges on a histone attract the positive DNA. 
B)  The positive charges on a histone attract the negative DNA. 
C)  Hydrogen bonding occurs between a histone and DNA. 
D)  DNA forms a covalent bond with a histone. 
E)  There is a phosphate bond between a histone and DNA.

Question 3

During replication, the DNA is unwound by _________, copied by _________ and proofread by _________.

Accepted Answer

A)  a helicase; DNA replicase; DNA polymerase 
B)  an isomerase; DNA polymerase; DNA polymerase 
C)  an isomerase; DNA replicase; DNA polymerase 
D)  a helicase; DNA polymerase; DNA polymerase 
E)  DNA replicase does all of these tasks. 
A)  a helicase; DNA replicase; DNA polymerase 
B)  an isomerase; DNA polymerase; DNA polymerase 
C)  an isomerase; DNA replicase; DNA polymerase 
D)  a helicase; DNA polymerase; DNA polymerase 
E)  DNA replicase does all of these tasks.

Question 4

Which of the following lists of characteristics accurately describes a codon?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e

Question 5

Translation continues until which codon is reached?

Accepted Answer

A)  All of these will halt translation. 
B)  UAA, UAG, or UGA 
C)  UAA 
D)  AUG 
E)  UAA or AUG 
A)  All of these will halt translation. 
B)  UAA, UAG, or UGA 
C)  UAA 
D)  AUG 
E)  UAA or AUG

Question 6

When DNA replicates, an adenine forms a base pair with

Accepted Answer

A)  cytosine. 
B)  guanine. 
C)  adenine. 
D)  thymine. 
E)  uracil. 
A)  cytosine. 
B)  guanine. 
C)  adenine. 
D)  thymine. 
E)  uracil.

Question 7

The arrow labeled II in the nucleic acid below is pointing to a(n)

Accepted Answer

A)  nonpolar covalent bond. 
B)  ionic interaction. 
C)  phosphate ester bond. 
D)  glycosidic bond. 
E)  hydrogen bond. 
A)  nonpolar covalent bond. 
B)  ionic interaction. 
C)  phosphate ester bond. 
D)  glycosidic bond. 
E)  hydrogen bond.

Question 8

Which of the following choices correctly lists the DNA and RNA base pairs?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e

Question 9

What type of permanent alteration of the chemical structure of a gene occurs after birth?

Accepted Answer

A)  an inherited mutation 
B)  a genetic disease 
C)  cervical cancer 
D)  altered proteins 
E)  an acquired mutation 
A)  an inherited mutation 
B)  a genetic disease 
C)  cervical cancer 
D)  altered proteins 
E)  an acquired mutation

Question 10

What is the complement of the following sequence of DNA: 5F1F1F1S1F1F1F10-CCTATCGA-3F1F1F1S1F1F1F10?

Accepted Answer

A)  5′-CCTATCGA-3′ 
B)  3′-CCTATCGA-5′ 
C)  3′-AGCTATCC-5′ 
D)  5′-GGATAGCT-3′ 
E)  5′-TCGATAGG-3′ 
A)  5′-CCTATCGA-3′ 
B)  3′-CCTATCGA-5′ 
C)  3′-AGCTATCC-5′ 
D)  5′-GGATAGCT-3′ 
E)  5′-TCGATAGG-3′

Question 11

How many chromosomes do most human cells contain?

Accepted Answer

A)  12 
B)  23 
C)  37 
D)  46 
E)  The number varies from cell to cell. 
A)  12 
B)  23 
C)  37 
D)  46 
E)  The number varies from cell to cell.

Question 12

Refer to the genetic code to determine which of the following mutations would result in a substitution of an amino acid into the protein.

Accepted Answer

A)  CAG mutated to UAG 
B)  CGG mutated to AGG 
C)  GCC mutated to GCG 
D)  AAU mutated to GAU 
E)  UGC mutated to UGA 
A)  CAG mutated to UAG 
B)  CGG mutated to AGG 
C)  GCC mutated to GCG 
D)  AAU mutated to GAU 
E)  UGC mutated to UGA

Question 13

How do mRNA and tRNA interact during the protein assembly process?

Accepted Answer

A)  through hydrogen bonds between the codon and anticodon 
B)  through covalent bonds between the codon and anticodon 
C)  through ionic interactions between the codon and anticodon 
D)  through nonpolar interactions between the codon and anticodon 
E)  mRNA and tRNA do not interact during the protein assembly process. 
A)  through hydrogen bonds between the codon and anticodon 
B)  through covalent bonds between the codon and anticodon 
C)  through ionic interactions between the codon and anticodon 
D)  through nonpolar interactions between the codon and anticodon 
E)  mRNA and tRNA do not interact during the protein assembly process.

Question 14

In the following cartoon of a DNA double helix, arrow II is pointing to a(n)

Accepted Answer

A)  DNA base pair. 
B)  ionic bond. 
C)  sugar phosphate backbone. 
D)  polar covalent bond. 
E)  hydrophilic interaction. 
A)  DNA base pair. 
B)  ionic bond. 
C)  sugar phosphate backbone. 
D)  polar covalent bond. 
E)  hydrophilic interaction.

Question 15

What is the complement of the following sequence of DNA: 5′-GTT CCC ATG-3′

Accepted Answer

A)  3′-GTT CCC ATG-5′ 
B)  5′-CAA GGG TAC-3′ 
C)  3′-CAA GGG TAC-5′ 
D)  3′-CAA GGG UAC-5′ 
E)  5′-CAA GGG UAC-3′ 
A)  3′-GTT CCC ATG-5′ 
B)  5′-CAA GGG TAC-3′ 
C)  3′-CAA GGG TAC-5′ 
D)  3′-CAA GGG UAC-5′ 
E)  5′-CAA GGG UAC-3′

Question 16

A _____ consists of a nitrogen-containing base and a sugar.

Accepted Answer

A)  nucleoside 
B)  nucleotide 
C)  pyrimidine 
D)  purine 
E)  base pair 
A)  nucleoside 
B)  nucleotide 
C)  pyrimidine 
D)  purine 
E)  base pair

Question 17

Using the genetic code table, identify the amino acid attached to this tRNA.

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e

Question 18

Which of the following statements does NOT describe a chromosome?

Accepted Answer

A)  A chromosome is made out of supercoiled DNA and proteins. 
B)  A chromosome contains one double-stranded DNA helix. 
C)  Stretched out, the DNA in one chromosome is about 1 mm long. 
D)  A chromosome can have an X shape. 
E)  A chromosome is visible under a microscope. 
A)  A chromosome is made out of supercoiled DNA and proteins. 
B)  A chromosome contains one double-stranded DNA helix. 
C)  Stretched out, the DNA in one chromosome is about 1 mm long. 
D)  A chromosome can have an X shape. 
E)  A chromosome is visible under a microscope.

Question 19

A normal DNA sequence is 5′-GTA GCA TCA CCA-5′. If the DNA sequence mutated to 5′-GCA GCA TTC ACC A-3′, how would the peptide sequence be affected?

Accepted Answer

A)  All amino acids downstream of the mutation would be misinserted. 
B)  The peptide would not be synthesized. 
C)  An Arg would replace an His. 
D)  A stop would replace a Trp. 
E)  No change would occur. 
A)  All amino acids downstream of the mutation would be misinserted. 
B)  The peptide would not be synthesized. 
C)  An Arg would replace an His. 
D)  A stop would replace a Trp. 
E)  No change would occur.

Question 20

The molecule below is a(n)

Accepted Answer

A)  nitrogen base. 
B)  nucleotides. 
C)  nucleosides. 
D)  amino acids. 
E)  purines. 
A)  nitrogen base. 
B)  nucleotides. 
C)  nucleosides. 
D)  amino acids. 
E)  purines.

A gene is a section of DNA that contains the instructions for making

Which of the following choices best describes the interaction between DNA and a histone?

During replication, the DNA is unwound by _____, copied by _ and proofread by _____.

Which of the following lists of characteristics accurately describes a codon?

Translation continues until which codon is reached?

When DNA replicates, an adenine forms a base pair with

The arrow labeled II in the nucleic acid below is pointing to a(n)

Which of the following choices correctly lists the DNA and RNA base pairs?

What type of permanent alteration of the chemical structure of a gene occurs after birth?

What is the complement of the following sequence of DNA: 5-CCTATCGA-3?

How many chromosomes do most human cells contain?

Refer to the genetic code to determine which of the following mutations would result in a substitution of an amino acid into the protein.

How do mRNA and tRNA interact during the protein assembly process?

In the following cartoon of a DNA double helix, arrow II is pointing to a(n)

What is the complement of the following sequence of DNA: 5′-GTT CCC ATG-3′

A _____ consists of a nitrogen-containing base and a sugar.

Using the genetic code table, identify the amino acid attached to this tRNA.

Which of the following statements does NOT describe a chromosome?

A normal DNA sequence is 5′-GTA GCA TCA CCA-5′. If the DNA sequence mutated to 5′-GCA GCA TTC ACC A-3′, how would the peptide sequence be affected?

The molecule below is a(n)

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

Exam 14: Nucleotides and Nucleic Acids

A gene is a section of DNA that contains the instructions for making

Which of the following choices best describes the interaction between DNA and a histone?

During replication, the DNA is unwound by _________, copied by _________ and proofread by _________.

Which of the following lists of characteristics accurately describes a codon?

Translation continues until which codon is reached?

When DNA replicates, an adenine forms a base pair with

The arrow labeled II in the nucleic acid below is pointing to a(n)

Which of the following choices correctly lists the DNA and RNA base pairs?

What type of permanent alteration of the chemical structure of a gene occurs after birth?

What is the complement of the following sequence of DNA: 5-CCTATCGA-3?

How many chromosomes do most human cells contain?

Refer to the genetic code to determine which of the following mutations would result in a substitution of an amino acid into the protein.

How do mRNA and tRNA interact during the protein assembly process?

In the following cartoon of a DNA double helix, arrow II is pointing to a(n)

What is the complement of the following sequence of DNA: 5′-GTT CCC ATG-3′

A _____ consists of a nitrogen-containing base and a sugar.

Using the genetic code table, identify the amino acid attached to this tRNA.

Which of the following statements does NOT describe a chromosome?

A normal DNA sequence is 5′-GTA GCA TCA CCA-5′. If the DNA sequence mutated to 5′-GCA GCA TTC ACC A-3′, how would the peptide sequence be affected?

The molecule below is a(n)

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

During replication, the DNA is unwound by _____, copied by _ and proofread by _____.