In Type I hypersensitivity the first dose of antigen is the _____. a. Immunizing Dose b. Sensitizing Dose c. Allergizing Dose d. Activating Dose

In Type I hypersensitivity the first dose of antigen is the _____.
a. Immunizing Dose
b. Sensitizing Dose
c. Allergizing Dose
d. Activating Dose
by

1 Answer

Answer :

b. Sensitizing Dose
by

Related questions

Systemic _____ is the most dangerous form of a Type I Hypersensitivity. a. Anaphylaxis b. Unconsciousness c. Edema d. Prostaglandins

Description : Systemic _____ is the most dangerous form of a Type I Hypersensitivity. a. Anaphylaxis b. Unconsciousness c. Edema d. Prostaglandins

Last Answer : a. Anaphylaxis

: _____ is an exaggerated or inappropriate immune defense that is causing the problems in an affected individual. a. Hypersensitivity b. Autoimmune disease c. AIDS d. HIV

Description : : _____ is an exaggerated or inappropriate immune defense that is causing the problems in an affected individual. a. Hypersensitivity b. Autoimmune disease c. AIDS d. HIV

Last Answer : a. Hypersensitivity

_____ cells have antibodies on their surface that perform receptor functions by binding to antigen (epitope).a. T b. B c. NK d. A-C are correct

Description : _____ cells have antibodies on their surface that perform receptor functions by binding to antigen (epitope). a. T b. B c. NK d. A-C are correct

Last Answer : b. B

Acquired immunity usually involves protein receptors on B and T cells that recognize discrete regions of the antigen called _____. a. haptens b. epitopes c. antibodies d. protein receptors

Description : Acquired immunity usually involves protein receptors on B and T cells that recognize discrete regions of the antigen called _____. a. haptens b. epitopes c. antibodies d. protein receptors

Last Answer : b. epitopes

Type IV hypersensitivity responses: a. typically occur 72 hours after contact with the antigen b. occur in Kveim's test c. occur in contact dermatitis d. all above

Description : Type IV hypersensitivity responses: a. typically occur 72 hours after contact with the antigen b. occur in Kveim's test c. occur in contact dermatitis d. all above

Last Answer : all above

The transfusion reaction that arises from the mixing of incompatible blood types illustrates a/an a. Form of lupus erythematous. b. Type i hypersensitivity. c. Immune complex reaction. d. Cytotoxic hypersensitivity.

Description : The transfusion reaction that arises from the mixing of incompatible blood types illustrates a/an a. Form of lupus erythematous. b. Type i hypersensitivity. c. Immune complex reaction. d. Cytotoxic hypersensitivity.

Last Answer : d. Cytotoxic hypersensitivity.

: DiGeorge syndrome and X-linked (Bruton) agammaglobulinemia differ in the a. Type of antibody produced by the immune system. b. Lymphocytes that the body fails to produce. c. Systems affected by the respective diseases. d. Type of hypersensitivity that ensues

Description : : DiGeorge syndrome and X-linked (Bruton) agammaglobulinemia differ in the a. Type of antibody produced by the immune system. b. Lymphocytes that the body fails to produce. c. Systems affected by the respective diseases. d. Type of hypersensitivity that ensues

Last Answer : c. Systems affected by the respective diseases.

Which one of the following applies to the disease systemic lupus erythematosus (SLE)? a. It is a type of cytotoxic hypersensitivity. b. It is often accompanied by a butterfly rash. c. It is due to an overreaction of T lymphocytes. d. It is the result of a cellular hypersensitivity.

Description : Which one of the following applies to the disease systemic lupus erythematosus (SLE)? a. It is a type of cytotoxic hypersensitivity. b. It is often accompanied by a butterfly rash. c. It is due to an overreaction of T lymphocytes. d. It is the result of a cellular hypersensitivity.

Last Answer : d. It is the result of a cellular hypersensitivity.

A cytotoxic hypersensitivity would occur if blood type is transfused into a person with blood type a. A;AB b. 0; AB c. A; 0 d. 0; B

Description : A cytotoxic hypersensitivity would occur if blood type is transfused into a person with blood type a. A;AB b. 0; AB c. A; 0 d. 0; B

Last Answer : a. A;AB

Which of the following is NOT a type I hypersensitivity? A. Food Allergies B. Contact Dermatitis C. Allergic Rhinitis D. Exercise Induced Allergies

Description : Which of the following is NOT a type I hypersensitivity? A. Food Allergies B. Contact Dermatitis C. Allergic Rhinitis D. Exercise Induced Allergies

Last Answer : B. Contact Dermatitis

Which of the following mediates Type I hypersensitivity reaction? A- IgE B- IgG C- IgM D- IgD

Description : Which of the following mediates Type I hypersensitivity reaction? A- IgE B- IgG C- IgM D- IgD

Last Answer : IgE

The following are true about cell-mediated immunity: a. antigen-specific function is the role of the T-lymphocytes b. cell-mediated immunity can activate the complement system c. it is responsible for the delayed hypersensitivity reaction. d. Gamma interferon is an important mediator of B-cell activation.

Description : The following are true about cell-mediated immunity: a. antigen-specific function is the role of the T-lymphocytes b. cell-mediated immunity can activate the complement system c. it is ... the delayed hypersensitivity reaction. d. Gamma interferon is an important mediator of B-cell activation.

Last Answer : cell-mediated immunity can activate the complement system

_____ is when an antimicrobial drug should harm the infectious agent but not the host. a. Selective toxicity b. Toxic dose c. Therapeutic dose d. Chemotherapeutic index

Description : _____ is when an antimicrobial drug should harm the infectious agent but not the host. a. Selective toxicity b. Toxic dose c. Therapeutic dose d. Chemotherapeutic index

Last Answer : a. Selective toxicity

The site where a pathogen enters the body is commonly called the _____ while the number of pathogens necessary to establish an infection is the _____. a. Penetration Point; Dose b. Penetration Point; Acme c. Portal Of Entry; Dose d. Portal Of Entry; Acme

Description : The site where a pathogen enters the body is commonly called the _____ while the number of pathogens necessary to establish an infection is the _____. a. Penetration Point; Dose b. Penetration Point; Acme c. Portal Of Entry; Dose d. Portal Of Entry; Acme

Last Answer : c. Portal Of Entry; Dose

Hashimoto disease and Graves‘ disease are similar in that both a. Affect the thyroid gland. b. Affect the red blood cells. c. Are forms of cellular hypersensitivity? d. Are accompanied by histamine release.

Description : Hashimoto disease and Graves‘ disease are similar in that both a. Affect the thyroid gland. b. Affect the red blood cells. c. Are forms of cellular hypersensitivity? d. Are accompanied by histamine release.

Last Answer : b. Affect the red blood cells.

During the course of a cellular hypersensitivity a. Antibodies react with antigens in tissues. b. Serotonin and histamine are released by cells. c. Immune complexes form on blood vessel surfacesd. A skin thickening called an induration may form..

Description : During the course of a cellular hypersensitivity a. Antibodies react with antigens in tissues. b. Serotonin and histamine are released by cells. c. Immune complexes form on blood vessel surfaces. d. A skin thickening called an induration may form.

Last Answer : b. Serotonin and histamine are released by cells.

Serum sickness is a common symptom of a. Contact dermatitis. b. Hemolytic disease of the newborn. c. Immune complex hypersensitivity d. Food allergies.

Description : Serum sickness is a common symptom of a. Contact dermatitis. b. Hemolytic disease of the newborn. c. Immune complex hypersensitivity d. Food allergies.

Last Answer : c. Immune complex hypersensitivity

In which of the following cell mediated immunity (CMI) participates? A.Delayed hypersensitivity reaction B.Graft versus host reaction C.Allograft rejection D.All of the above

Description : In which of the following cell mediated immunity (CMI) participates? A.Delayed hypersensitivity reaction B.Graft versus host reaction C.Allograft rejection D.All of the above

Last Answer : D.All of the above

In which of the following cell mediated immunity (CMI) participates? A.Delayed hypersensitivity reaction B.Graft versus host reaction C.Allograft rejection D.All of the above

Description : In which of the following cell mediated immunity (CMI) participates? A.Delayed hypersensitivity reaction B.Graft versus host reaction C.Allograft rejection D.All of the above

Last Answer : .All of the above

An intradermal penicillin sensitivity test has been performed on a patient and found to be negative. This indicates that: A. Penicillin antibodies are not present in his body B. He will not develop any reaction when full dose of penicillin is injected C. He will not develop anaphylactic reaction when full dose of penicillin is injected D. He is unlikely to develop immediate type of hypersensitivity reaction when full dose of penicillin is injected

Description : An intradermal penicillin sensitivity test has been performed on a patient and found to be negative. This indicates that: A. Penicillin antibodies are not present in his body B. He will ... He is unlikely to develop immediate type of hypersensitivity reaction when full dose of penicillin is injected

Last Answer : D. He is unlikely to develop immediate type of hypersensitivity reaction when full dose of penicillin is injected

Titer refers to a. The most concentrated antigen-antibody concentration showing a reaction.b. The first diluted antigen-antibody concentration showing a reaction. c. The precipitation line formed between an antigen-antibody reaction. d. The most dilute antigen-antibody concentration showing a reaction.

Description : Titer refers to a. The most concentrated antigen-antibody concentration showing a reaction. b. The first diluted antigen-antibody concentration showing a reaction. c. The precipitation line ... antigen-antibody reaction. d. The most dilute antigen-antibody concentration showing a reaction.

Last Answer : d. The most dilute antigen-antibody concentration showing a reaction.

Severe combined immunodeficiency disease refers to a condition wherein a patient a. Cannot produce T and B cells.b. Interferon. c. Antigen-presenting cells. d. Hydrogen peroxide in phagocytes

Description : Severe combined immunodeficiency disease refers to a condition wherein a patient a. Cannot produce T and B cells. b. Interferon. c. Antigen-presenting cells. d. Hydrogen peroxide in phagocytes

Last Answer : a. Cannot produce T and B cells.

What is the advantage of a recombinant subunit vaccine? a. it can't cause disease b. adverse reactions are rare because only the important subunits of the antigen are included c. the vaccine is not made from blood fragments d. A-C are correct

Description : What is the advantage of a recombinant subunit vaccine? a. it can't cause disease b. adverse reactions are rare because only the important subunits of the antigen are included c. the vaccine is not made from blood fragments d. A-C are correct

Last Answer : d. A-C are correct

A hybridoma cell a. Secretes monoclonal antibodies. b. Presents antigens on its surface. c. Secretes polyclonal antibodies. d. Is an antigen-presenting cell

Description : A hybridoma cell a. Secretes monoclonal antibodies. b. Presents antigens on its surface. c. Secretes polyclonal antibodies. d. Is an antigen-presenting cell

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An attenuated vaccine contains a. Inactive toxins. b. Living, but slow growing (replicating) antigens. c. Killed bacteria. d. Noninfective antigen subunits.

Description : An attenuated vaccine contains a. Inactive toxins. b. Living, but slow growing (replicating) antigens. c. Killed bacteria. d. Noninfective antigen subunits.

Last Answer : b. Living, but slow growing (replicating) antigens.

Which one of the following is not an antigen? a. A toxin b. A virus c. A bacterial cell d. All (A-C) are antigens

Description : Which one of the following is not an antigen? a. A toxin b. A virus c. A bacterial cell d. All (A-C) are antigens

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Performs and granzymes are found in a. Helper T cells. b. Antigen-presenting cells. c. Cytotoxic T cells. d. B cells.

Description : Performs and granzymes are found in a. Helper T cells. b. Antigen-presenting cells. c. Cytotoxic T cells. d. B cells.

Last Answer : c. Cytotoxic T cells.

An antigen binding site on the IgG antibody is a combination of a. One variable region from a light chain and one from a heavy chain. b. Two variable regions from two light chains. c. Two variable regions from two heavy chainsd. One variable region from a constant region and one from a variable region..

Description : An antigen binding site on the IgG antibody is a combination of a. One variable region from a light chain and one from a heavy chain. b. Two variable regions from two light chains. c. Two ... from two heavy chains. d. One variable region from a constant region and one from a variable region.

Last Answer : a. One variable region from a light chain and one from a heavy chain.

Clonal selection includes a. Antigen-receptor binding on B cells. b. Antibody secretion recognizing same epitope as on B cell receptors. c. Differentiation of B cells into plasma cells and memory cells. d. All the above (A—C) are correct.

Description : Clonal selection includes a. Antigen-receptor binding on B cells. b. Antibody secretion recognizing same epitope as on B cell receptors. c. Differentiation of B cells into plasma cells and memory cells. d. All the above (A—C) are correct.

Last Answer : d. All the above (A—C) are correct.

In which of the following case a large lattice is formed? A.Antibody is in excess B.Antigens and antibodies are in optimal proportion C.Antigen is in excess D.None of these

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In which of the following case a large lattice is formed? A.Antibody is in excess B.Antigens and antibodies are in optimal proportion C.Antigen is in excess D.None of these

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Last Answer : B.Antigens and antibodies are in optimal proportion

Macrophages are professional antigen- presenting cells. The protein molecule through which theypresent antigen in human is A.actin B.interleukin C.HLA D.CD8

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The role of the M cell is toA- .trap virus in mucus and prevent entry B- induce apoptosis in virus-infected small intestinal epithelia cells C- pass bacteria or virus to underlying macrophages for processing and presentation of antigen D- they use their cilia to propel mucus out of the small intestine

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Last Answer : pass bacteria or virus to underlying macrophages for processing and presentation of antigen

Macrophages are professional antigen- presenting cells. The protein molecule through whichthey present antigen in human is A- actin B- nterleukin C- HLA D- .CD8

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Last Answer : .CD8

Which of the following(s) is/are the determinants of antigenicity? A- Chemical nature B- Size of the antigen C- Foreignness D- All of these

Description : Which of the following(s) is/are the determinants of antigenicity? A- Chemical nature B- Size of the antigen C- Foreignness D- All of these

Last Answer : All of these

Chemically an antigen may be A- lipid B- protein C- polysaccharide D- any of these

Description : Chemically an antigen may be A- lipid B- protein C- polysaccharide D- any of these

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Which is not an antigen-presenting cell (or APC)? A- B cell B- .Polymorphonuclear leukocyte (or PMN) C- Dendritic cell D- All of the above

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CD8 surface antigen is present in A- cytotoxic T cells B- .suppresssor T cells C- both (a) and (b) D- none of these

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Which of the following expresses CD3 surface antigen? A- Granulocytes B- T cells C- Monocytes D- B cells

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Numerous antibodies can be prepared, against one antigen, each binds to unique epitopes. How is this antibody diversity generated? A- By rearrangements of the DNA encoding the variable regions of the heavy and light chains B- By the combination of different heavy and light chains that form the antigen binding siteC- Antibody proteins can physically change their shape to bind different epitopes D- Both (a) and (b)

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Last Answer : Both (a) and (b)

Which of the following is exposed on the outer surface of a gram-negative bacterium?A- O-antigen of lipopolysaccharide (LPS) B- Polysaccharide portion of lipoteichoic acid (LTA) C- Braun lipoprotein D- .Electron transport system components

Description : Which of the following is exposed on the outer surface of a gram-negative bacterium?A- O-antigen of lipopolysaccharide (LPS) B- Polysaccharide portion of lipoteichoic acid (LTA) C- Braun lipoprotein D- .Electron transport system components

Last Answer : O-antigen of lipopolysaccharide (LPS)

Factors affecting virulence may include a. The presence of pathogenicity islands. b. Their ability to penetrate the host. c. The infectious dose. d. All the above (a—c) are correct.

Description : Factors affecting virulence may include a. The presence of pathogenicity islands. b. Their ability to penetrate the host. c. The infectious dose. d. All the above (a—c) are correct.

Last Answer : d. All the above (a—c) are correct.

The elimination of pathogens in foods by irradiation is called a. The D Value. b. The Pasteurizing Dose. c. Incineration. d. Sterilization.

Description : The elimination of pathogens in foods by irradiation is called a. The D Value. b. The Pasteurizing Dose. c. Incineration. d. Sterilization.

Last Answer : b. The Pasteurizing Dose.

The colostrum, or first milk of a nursing mother, contains _____ that is transferred to the nursing child. a. IgA b. IgG c. IgM d. IgE

Description : The colostrum, or first milk of a nursing mother, contains _____ that is transferred to the nursing child. a. IgA b. IgG c. IgM d. IgE

Last Answer : a. IgA

One indirect way to determine microbial growth is using a _____. a. UV light b. Spectrophotometer c. Light meter d. Radioactive counter

Description : One indirect way to determine microbial growth is using a _____. a. UV light b. Spectrophotometer c. Light meter d. Radioactive counter

Last Answer : b. Spectrophotometer

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Last Answer : a. Amylase

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Description : The alcoholic content of beer is approximately _____. a. 0.02 b. 0.04 c. 0.06 d. 0.08

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: In the United States, distilled beverages are designated with a "proof number," which is _____ the percentage of the alcohol content. a. half b. one fourth c. twice d. 4 times

Description : : In the United States, distilled beverages are designated with a "proof number," which is _____ the percentage of the alcohol content. a. half b. one fourth c. twice d. 4 times

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To the present time, over _____ antibiotic substances have been described and approximately _____ such drugs are available to the medical practitioner. a. 10,000; 100 b. 8,000; 100 c. 6000; 300 d. 4,000; 400

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Last Answer : b. 8,000; 100

When the Exxon Valdez oil spill occurred, technologists "fertilized" the oil-soaked water with _____ to modify the environment and stimulate he growth of naturally occurring microorganisms. a. nitrogen sources (e.g., urea) b. phosphorus compounds c. other mineral nutrients d. A-C above are correct

Description : When the Exxon Valdez oil spill occurred, technologists "fertilized" the oil-soaked water with _____ to modify the environment and stimulate he growth of naturally occurring microorganisms. a. nitrogen sources (e.g., urea) b. phosphorus compounds c. other mineral nutrients d. A-C above are correct

Last Answer : d. A-C above are correct