Question 1

Which type of genetic material forms the genome of HIV?

Accepted Answer

A)  single-stranded DNA 
B)  double-stranded DNA 
C)  single-stranded RNA 
D)  double-stranded RNA 
A)  single-stranded DNA 
B)  double-stranded DNA 
C)  single-stranded RNA 
D)  double-stranded RNA

Question 2

Which of the following immunoglobulins has the lowest molecular weight?

Accepted Answer

A)  IgA 
B)  IgD 
C)  IgE 
D)  IgM 
A)  IgA 
B)  IgD 
C)  IgE 
D)  IgM

Question 3

What is a neutralizing antibody?

Accepted Answer

A)  an antibody that affects the electrical charge of an antigen 
B)  an antibody that affects the pH of an antigen 
C)  an antibody that completely eliminates an antigen 
D)  none of these 
A)  an antibody that affects the electrical charge of an antigen 
B)  an antibody that affects the pH of an antigen 
C)  an antibody that completely eliminates an antigen 
D)  none of these

Question 4

Where are B and T cells found in the body?

Accepted Answer

A)  They are found only in the blood. 
B)  They are found only in the lymph. 
C)  They are primarily found in the blood but some are also found in the lymph. 
D)  They are primarily found in the lymph but some are also found in the blood. 
A)  They are found only in the blood. 
B)  They are found only in the lymph. 
C)  They are primarily found in the blood but some are also found in the lymph. 
D)  They are primarily found in the lymph but some are also found in the blood.

Question 5

How does HIV evade the innate immunity system of the body?

Accepted Answer

A)  It borrows proteins from the host to go into a state of dormancy. 
B)  It binds to host proteins that resemble its own proteins. 
C)  It binds an antiviral agent restriction protein named cyclophilin to its capsid. 
D)  It does not avoid detection but simply overpowers the innate immunity system. 
A)  It borrows proteins from the host to go into a state of dormancy. 
B)  It binds to host proteins that resemble its own proteins. 
C)  It binds an antiviral agent restriction protein named cyclophilin to its capsid. 
D)  It does not avoid detection but simply overpowers the innate immunity system.

Question 6

Which of the following cells undergo V(J)D recombination?

Accepted Answer

A)  B cells 
B)  Macrophages 
C)  T cells 
D)  All of these 
A)  B cells 
B)  Macrophages 
C)  T cells 
D)  All of these

Question 7

Which of the following statements is true of stem cells?

Accepted Answer

A)  They can only differentiate into B cells. 
B)  They can only differentiate into T cells. 
C)  They can differentiate into either B cells or T cells. 
D)  They are not involved in the production of lymphocytes. 
A)  They can only differentiate into B cells. 
B)  They can only differentiate into T cells. 
C)  They can differentiate into either B cells or T cells. 
D)  They are not involved in the production of lymphocytes.

Question 8

Identify the type of mutation responsible for the abundant diversity of Ig molecules.

Accepted Answer

A)  germline mutation 
B)  somatic mutation 
C)  both germline mutation and somatic mutation 
D)  neither germline mutation nor somatic mutation 
A)  germline mutation 
B)  somatic mutation 
C)  both germline mutation and somatic mutation 
D)  neither germline mutation nor somatic mutation

Question 9

Which of the following statements is true of innate immunity?

Accepted Answer

A)  It includes both physical and cellular barriers. 
B)  It is highly pathogen specific. 
C)  Both of these statements are true. 
D)  Neither of these statements is true. 
A)  It includes both physical and cellular barriers. 
B)  It is highly pathogen specific. 
C)  Both of these statements are true. 
D)  Neither of these statements is true.

Question 10

Which class of immunoglobulins has the highest concentration in the serum?

Accepted Answer

A)  IgA 
B)  IgD 
C)  IgG 
D)  IgM 
A)  IgA 
B)  IgD 
C)  IgG 
D)  IgM

Question 11

Which of the following statements is true of immunoglobulins?

Accepted Answer

A)  They are composed of six polypeptide chains that are arranged asymmetrically. 
B)  They have symmetrically arranged polypeptide chains forming a Y shape. 
C)  They are composed of a light chain and a heavy chain. 
D)  They have two disulfide bonds holding the light and heavy chains. 
A)  They are composed of six polypeptide chains that are arranged asymmetrically. 
B)  They have symmetrically arranged polypeptide chains forming a Y shape. 
C)  They are composed of a light chain and a heavy chain. 
D)  They have two disulfide bonds holding the light and heavy chains.

Question 12

Which of the following diseases has been eliminated using vaccines?

Accepted Answer

A)  AIDS 
B)  Hepatitis C 
C)  Tuberculosis 
D)  Malaria 
E)  None of these 
A)  AIDS 
B)  Hepatitis C 
C)  Tuberculosis 
D)  Malaria 
E)  None of these

Question 13

Which of the following statements is true of class I and class II MHC molecules?

Accepted Answer

A)  Both are transmembrane proteins. 
B)  Both have peptide-binding variable domains. 
C)  Both of these statements are true. 
D)  Neither of these statements is true. 
A)  Both are transmembrane proteins. 
B)  Both have peptide-binding variable domains. 
C)  Both of these statements are true. 
D)  Neither of these statements is true.

Question 14

What is the function of class II MHC molecules?

Accepted Answer

A)  They pick up exogenous "dead" antigens. 
B)  They seek out antigen molecules that have been synthesized inside a virus-infected cell. 
C)  Both of these are functions of class II MHC molecules. 
D)  Neither of these is a function of class II MHC molecules. 
A)  They pick up exogenous "dead" antigens. 
B)  They seek out antigen molecules that have been synthesized inside a virus-infected cell. 
C)  Both of these are functions of class II MHC molecules. 
D)  Neither of these is a function of class II MHC molecules.

Question 15

Which of the following types of cells is responsible for long-term immunity?

Accepted Answer

A)  Macrophages 
B)  Dendritic cells 
C)  B cells 
D)  T cells 
A)  Macrophages 
B)  Dendritic cells 
C)  B cells 
D)  T cells

Question 16

What happens when B cells are exposed to antigens?

Accepted Answer

A)  The B cell divides and differentiates into plasma cells. 
B)  The B cell differentiates, and the daughter cells produce soluble antibodies. 
C)  Both of these are the possible outcomes of the antigen-antibody interaction. 
D)  None of these are the possible outcomes of the antigen-antibody interaction. 
A)  The B cell divides and differentiates into plasma cells. 
B)  The B cell differentiates, and the daughter cells produce soluble antibodies. 
C)  Both of these are the possible outcomes of the antigen-antibody interaction. 
D)  None of these are the possible outcomes of the antigen-antibody interaction.

Question 17

What are miniature antibodies?

Accepted Answer

A)  antibodies that are smaller than normal size 
B)  antibodies that lack heavy chains 
C)  antibodies that lack light chains 
D)  antibodies that are found in negligible quantities in blood serum 
A)  antibodies that are smaller than normal size 
B)  antibodies that lack heavy chains 
C)  antibodies that lack light chains 
D)  antibodies that are found in negligible quantities in blood serum

Question 18

Which of the following classes of immune cells include dendritic cells?

Accepted Answer

A)  antibody presenting cells 
B)  macrophages 
C)  plasma cells 
D)  antigen presenting cells 
A)  antibody presenting cells 
B)  macrophages 
C)  plasma cells 
D)  antigen presenting cells

Question 19

Which of the following are involved in the binding of a T-cell receptor to an antigen?

Accepted Answer

A)  An antigen-presenting cell 
B)  A major histocompatibility complex molecule 
C)  CD coreceptors 
D)  All of these 
A)  An antigen-presenting cell 
B)  A major histocompatibility complex molecule 
C)  CD coreceptors 
D)  All of these

Question 20

Which class of immunoglobulins is found in secretions and prevents invading material from entering the blood stream?

Accepted Answer

A)  IgA 
B)  IgD 
C)  IgE 
D)  IgM 
A)  IgA 
B)  IgD 
C)  IgE 
D)  IgM

Exam 30: Immunochemistry

Which type of genetic material forms the genome of HIV?

Which of the following immunoglobulins has the lowest molecular weight?

What is a neutralizing antibody?

Where are B and T cells found in the body?

How does HIV evade the innate immunity system of the body?

Which of the following cells undergo V(J)D recombination?

Which of the following statements is true of stem cells?

Identify the type of mutation responsible for the abundant diversity of Ig molecules.

Which of the following statements is true of innate immunity?

Which class of immunoglobulins has the highest concentration in the serum?

Which of the following statements is true of immunoglobulins?

Which of the following diseases has been eliminated using vaccines?

Which of the following statements is true of class I and class II MHC molecules?

What is the function of class II MHC molecules?

Which of the following types of cells is responsible for long-term immunity?

What happens when B cells are exposed to antigens?

What are miniature antibodies?

Which of the following classes of immune cells include dendritic cells?

Which of the following are involved in the binding of a T-cell receptor to an antigen?

Which class of immunoglobulins is found in secretions and prevents invading material from entering the blood stream?

Matter, Energy, and Measurement

Atoms

Chemical Bonds

Chemical Reactions

Gases, Liquids, and Solids

Solutions and Colloids

Reaction Rates and Chemical Equilibrium

Acids and Bases

Nuclear Chemistry

Organic Chemistry

Alkanes

Alkenes, Alkynes, and Aromatic Compounds

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

Carboxylic Acids

Carboxylic Anhydrides, Esters, and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Chemical Communications: Neurotransmitters and Hormones

Nucleotides, Nucleic Acids, and Heredity

Gene Expression and Protein Synthesis

Bioenergetics: How the Body Converts Food to Energy

Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

Biosynthetic Pathways

Nutrition

Body Fluids

Filters