Question 1

Which type of immunity is carried out by antibodies and mediated by B lymphocytes or B cells?

Accepted Answer

A) humorous immunity 
B) cell-mediated immunity 
C) lymphocytic immunity 
D) humoral immunity 
E) surface-mediated immunity 
A) humorous immunity 
B) cell-mediated immunity 
C) lymphocytic immunity 
D) humoral immunity 
E) surface-mediated immunity

Question 2

Which cells are characterized by their possession of CD4 and CD25 surface markers?

Accepted Answer

A) TH1 cells 
B) TH2 cells 
C) cytotoxic T lymphocytes 
D) B cells 
E) regulatory T lymphocytes 
A) TH1 cells 
B) TH2 cells 
C) cytotoxic T lymphocytes 
D) B cells 
E) regulatory T lymphocytes

Question 3

You are studying a weasel and find that its genome contains 7 J$\kappa$ and 55 V$\kappa$ genes.Other sources of variation like changes in the site at which a J sequence joins a V sequence and the ability of deoxynucleotidyl transferase to insert nucleotides at sites of strand breakage have been found to introduce an additional ten-fold increase in variability.Assuming that any V sequence can join with any J sequence,how many different $\kappa$ chains can this organism make?

Accepted Answer

A) 620 
B) 385 
C) 3850 
D) 70 
E) 550 
A) 620 
B) 385 
C) 3850 
D) 70 
E) 550

Question 4

The rearranged DNA elements encoding the V regions of antibodies are estimated to have a mutation rate 105 times greater than that of other genetic loci in same cell.This phenomenon is referred to as __________.

Accepted Answer

A) somatic hypermutation 
B) somatic hypomutation 
C) somatic hyperattenuation 
D) enhanced mutability 
E) mutational hyperannuity 
A) somatic hypermutation 
B) somatic hypomutation 
C) somatic hyperattenuation 
D) enhanced mutability 
E) mutational hyperannuity

Question 5

Which antigens elicit antibody formation without the involvement of T cells?

Accepted Answer

A) lipids present in the liver cell membrane 
B) polysaccharides present inside lysosomes 
C) polysaccharides present in bacterial cell walls 
D) proteins present in bacterial cell walls 
E) membrane-bound nucleotides 
A) lipids present in the liver cell membrane 
B) polysaccharides present inside lysosomes 
C) polysaccharides present in bacterial cell walls 
D) proteins present in bacterial cell walls 
E) membrane-bound nucleotides

Question 6

Which cells of the immune system produce IFN-$\gamma$and protect the body against intracellular pathogens by activating macrophages to kill pathogens they might harbor?

Accepted Answer

A) TH1 cells 
B) TH2 cells 
C) cytotoxic T lymphocytes 
D) B cells 
E) regulatory T lymphocytes 
A) TH1 cells 
B) TH2 cells 
C) cytotoxic T lymphocytes 
D) B cells 
E) regulatory T lymphocytes

Question 7

What immune system organ is located in the chest,is responsible for the differentiation of T cells and reaches its peak size during childhood?

Accepted Answer

A) the thyroid gland 
B) the adrenal gland 
C) the thymus gland 
D) the lymph nodes 
E) the liver 
A) the thyroid gland 
B) the adrenal gland 
C) the thymus gland 
D) the lymph nodes 
E) the liver

Question 8

When does the full repertoire of antibody-producing cells a person will ever have appear in the lymphoid tissue?

Accepted Answer

A) in the fertilized egg 
B) before stimulation by any antigen 
C) before stimulation by any antibody 
D) after stimulation by all of the possible antibodies 
E) after stimulation by any of the possible antigens 
A) in the fertilized egg 
B) before stimulation by any antigen 
C) before stimulation by any antibody 
D) after stimulation by all of the possible antibodies 
E) after stimulation by any of the possible antigens

Which type of immunity is carried out by antibodies and mediated by B lymphocytes or B cells?

Which cells are characterized by their possession of CD4 and CD25 surface markers?

The rearranged DNA elements encoding the V regions of antibodies are estimated to have a mutation rate 105 times greater than that of other genetic loci in same cell.This phenomenon is referred to as __________.

Which antigens elicit antibody formation without the involvement of T cells?

Which cells of the immune system produce IFN- $\gamma$ and protect the body against intracellular pathogens by activating macrophages to kill pathogens they might harbor?

What immune system organ is located in the chest,is responsible for the differentiation of T cells and reaches its peak size during childhood?

When does the full repertoire of antibody-producing cells a person will ever have appear in the lymphoid tissue?

Introduction to the Study of Cell and Molecular Biology

The Chemical Basis of Life

Bioenergetics, Enzymes, and Metabolism

The Structure and Function of the Plasma Membrane

Aerobic Respiration and the Mitochondrion

Photosynthesis and the Chloroplast

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, Function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

The Nature of the Gene and the Genome

Gene Expression: From Transcription to Translation

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

Techniques in Cell and Molecular Biology

Filters

Exam 17: The Immune Response

Which type of immunity is carried out by antibodies and mediated by B lymphocytes or B cells?

Which cells are characterized by their possession of CD4 and CD25 surface markers?

The rearranged DNA elements encoding the V regions of antibodies are estimated to have a mutation rate 105 times greater than that of other genetic loci in same cell.This phenomenon is referred to as __________.

Which antigens elicit antibody formation without the involvement of T cells?

Which cells of the immune system produce IFN- γ\gammaγ and protect the body against intracellular pathogens by activating macrophages to kill pathogens they might harbor?

What immune system organ is located in the chest,is responsible for the differentiation of T cells and reaches its peak size during childhood?

When does the full repertoire of antibody-producing cells a person will ever have appear in the lymphoid tissue?

Introduction to the Study of Cell and Molecular Biology

The Chemical Basis of Life

Bioenergetics, Enzymes, and Metabolism

The Structure and Function of the Plasma Membrane

Aerobic Respiration and the Mitochondrion

Photosynthesis and the Chloroplast

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, Function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

The Nature of the Gene and the Genome

Gene Expression: From Transcription to Translation

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

Techniques in Cell and Molecular Biology

Filters

Which cells of the immune system produce IFN- $\gamma$ and protect the body against intracellular pathogens by activating macrophages to kill pathogens they might harbor?