Question 1

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 2

How is the amino acid attached to the tRNA molecule?

Accepted Answer

A)  They are connected by dipole-dipole interactions. 
B)  They are connected by hydrogen bonds. 
C)  They are connected by ionic interactions. 
D)  They are connected by amide bonds. 
E)  They are connected by ester bonds. 
A)  They are connected by dipole-dipole interactions. 
B)  They are connected by hydrogen bonds. 
C)  They are connected by ionic interactions. 
D)  They are connected by amide bonds. 
E)  They are connected by ester bonds.

Question 3

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 4

Transcription occurs in the ________, whereas translation occurs in the _________.

Accepted Answer

A)  cytoplasm; nucleus 
B)  mitochondria; cytoplasm 
C)  nucleus; mitochondria 
D)  cytoplasm; mitochondria 
E)  nucleus; cytoplasm 
A)  cytoplasm; nucleus 
B)  mitochondria; cytoplasm 
C)  nucleus; mitochondria 
D)  cytoplasm; mitochondria 
E)  nucleus; cytoplasm

Question 5

A mRNA sequence that codes for a protein is 5′-CAA GGG UAC-3′.Which of the following choices does NOT cause a change in the amino acid 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 6

In the following drawing 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 7

The boxed portion of the following structure represents a

Accepted Answer

A)  salt bridge. 
B)  hydrogen bond. 
C)  disulfide bridge. 
D)  hydrophobic interaction. 
E)  hydrophilic interaction. 
A)  salt bridge. 
B)  hydrogen bond. 
C)  disulfide bridge. 
D)  hydrophobic interaction. 
E)  hydrophilic interaction.

Question 8

All living organisms have the same

Accepted Answer

A)  genes. 
B)  chromosomes. 
C)  proteins. 
D)  genetic code. 
E)  DNA sequence. 
A)  genes. 
B)  chromosomes. 
C)  proteins. 
D)  genetic code. 
E)  DNA sequence.

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

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 11

In a nucleotide, what type of functional group joins the phosphate group to the sugar?

Accepted Answer

A)  a carboxylic acid 
B)  a glycosidic bond 
C)  a monophosphate ester 
D)  an amide 
E)  an ether 
A)  a carboxylic acid 
B)  a glycosidic bond 
C)  a monophosphate ester 
D)  an amide 
E)  an ether

Question 12

What is a gene?

Accepted Answer

A)  a segment of DNA containing information for assembling the sequence of amino acids for a specific protein 
B)  a molecule of DNA containing thousands of nucleotides 
C)  a change in DNA that may cause an inherited disease 
D)  an alteration in the DNA that is caused by environmental factors 
E)  All of the above are definitions of a gene. 
A)  a segment of DNA containing information for assembling the sequence of amino acids for a specific protein 
B)  a molecule of DNA containing thousands of nucleotides 
C)  a change in DNA that may cause an inherited disease 
D)  an alteration in the DNA that is caused by environmental factors 
E)  All of the above are definitions of a gene.

Question 13

Which choice 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 14

Which 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 15

Which statement BEST describes why the sugar phosphate nucleic acid backbone is on the outer part of the DNA double helix while the nitrogen bases are on the inside of the double helix?

Accepted Answer

A)  The sugar phosphate backbone is hydrophilic while the bases are less polar. 
B)  The sugar phosphate backbone is hydrophobic while the bases are hydrophilic. 
C)  The sugar phosphate backbones of the two strands are bonded together. 
D)  The nitrogen bases are covalently bonded to each other. 
E)  There is no reason; the structure is just that way. 
A)  The sugar phosphate backbone is hydrophilic while the bases are less polar. 
B)  The sugar phosphate backbone is hydrophobic while the bases are hydrophilic. 
C)  The sugar phosphate backbones of the two strands are bonded together. 
D)  The nitrogen bases are covalently bonded to each other. 
E)  There is no reason; the structure is just that way.

Question 16

Which type of RNA is the complement of the template strand of DNA in the nucleus?

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 complement of the DNA. 
A)  ribosomal RNA (rRN
A)  
B)  RNA polymerase 
C)  messenger RNA (mRN
A)  
D)  transfer RNA (tRN
A)  
E)  All of these are the complement of the DNA.

Question 17

The nucleoside below is found in DNA and not RNA.Which of the following statements supports this molecule being a DNA nucleoside?

Accepted Answer

A)  The molecule is the β-anomer. 
B)  The molecule contains a pyrimidine. 
C)  The molecule contains a purine. 
D)  The molecule contains a 2-deoxy-D-ribose. 
E)  The molecule contains a D-ribose. 
A)  The molecule is the β-anomer. 
B)  The molecule contains a pyrimidine. 
C)  The molecule contains a purine. 
D)  The molecule contains a 2-deoxy-D-ribose. 
E)  The molecule contains a D-ribose.

Question 18

In the diagram below, letter F is _______, letter E is__________, and letter B is____.   ​

Accepted Answer

A)  rRNA; mRNA; tRNA 
B)  rRNA; tRNA; mRNA 
C)  tRNA; rRNA; mRNA 
D)  tRNA; mRNA; rRNA 
E)  mRNA; rRNA; tRNA 
A)  rRNA; mRNA; tRNA 
B)  rRNA; tRNA; mRNA 
C)  tRNA; rRNA; mRNA 
D)  tRNA; mRNA; rRNA 
E)  mRNA; rRNA; tRNA

Question 19

Each person has about ______ genes.

Accepted Answer

A)  1,000 
B)  10,000 
C)  30,000 
D)  50,0000 
E)  100,000 
A)  1,000 
B)  10,000 
C)  30,000 
D)  50,0000 
E)  100,000

Question 20

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.

What is the role of HIV protease in HIV infection?

How is the amino acid attached to the tRNA molecule?

Which of the following molecules is a nucleotide?

Transcription occurs in the , whereas translation occurs in the _.

A mRNA sequence that codes for a protein is 5′-CAA GGG UAC-3′.Which of the following choices does NOT cause a change in the amino acid sequence?

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

The boxed portion of the following structure represents a

All living organisms have the same

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

How many chromosomes do most human cells contain?

In a nucleotide, what type of functional group joins the phosphate group to the sugar?

What is a gene?

Which choice BEST describes the interaction between DNA and a histone?

Which statements BEST describes what occurs during translation?

Which statement BEST describes why the sugar phosphate nucleic acid backbone is on the outer part of the DNA double helix while the nitrogen bases are on the inside of the double helix?

Which type of RNA is the complement of the template strand of DNA in the nucleus?

The nucleoside below is found in DNA and not RNA.Which of the following statements supports this molecule being a DNA nucleoside?

In the diagram below, letter F is _, letter E is, and letter B is.

Each person has about ______ genes.

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

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Energy and Metabolism

Filters

Exam 17: Nucleotides and Nucleic Acids

What is the role of HIV protease in HIV infection?

How is the amino acid attached to the tRNA molecule?

Which of the following molecules is a nucleotide?

Transcription occurs in the ________, whereas translation occurs in the _________.

A mRNA sequence that codes for a protein is 5′-CAA GGG UAC-3′.Which of the following choices does NOT cause a change in the amino acid sequence?

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

The boxed portion of the following structure represents a

All living organisms have the same

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

How many chromosomes do most human cells contain?

In a nucleotide, what type of functional group joins the phosphate group to the sugar?

What is a gene?

Which choice BEST describes the interaction between DNA and a histone?

Which statements BEST describes what occurs during translation?

Which statement BEST describes why the sugar phosphate nucleic acid backbone is on the outer part of the DNA double helix while the nitrogen bases are on the inside of the double helix?

Which type of RNA is the complement of the template strand of DNA in the nucleus?

The nucleoside below is found in DNA and not RNA.Which of the following statements supports this molecule being a DNA nucleoside?

In the diagram below, letter F is _______, letter E is__________, and letter B is____. ​

Each person has about ______ genes.

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

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Energy and Metabolism

Filters

Transcription occurs in the , whereas translation occurs in the _.

In the diagram below, letter F is _, letter E is, and letter B is.