Decrease in white blood cells results in (a) Decrease in Antibodies (b) Increase in Antigens (c) Increase in Antibodies (d) No change

Decrease in white blood cells results in (a) Decrease in Antibodies (b) Increase in Antigens (c) Increase in Antibodies (d) No change
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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.

What is correct for blood group O? (a) No antigens but both a and b antibodies are present. (b) A antigen and b antibody present. (c) Antigen and antibody both absent. (d) A and B antigens and a, b antibodies present.

Description : What is correct for blood group O? (a) No antigens but both a and b antibodies are present. (b) A antigen and b antibody present. (c) Antigen and antibody both absent. (d) A and B antigens and a, b antibodies present.

Last Answer : (a) No antigens but both a and b antibodies are present.

Person with blood group AB is considered as universal recipient because he has (a) both A and B antigens on RBC but no antibodies in the plasma (b) both A and B antibodies in the plasma (c) no antigen on RBC and no antibody in the plasma (d) both A and B antigens in the plasma but no antibodies.

Description : Person with blood group AB is considered as universal recipient because he has (a) both A and B antigens on RBC but no antibodies in the plasma (b) both A and B antibodies in the plasma (c) no antigen on RBC and no antibody in the plasma (d) both A and B antigens in the plasma but no antibodies.

Last Answer : (a) both A and B antigens on RBC but no antibodies in the plasma

T cells can recognise (A) Free antigens (B) Antigens bound to cells (C) Antigens bound to antibodies (D) Antigens bound to MHC proteins

Description : T cells can recognise (A) Free antigens (B) Antigens bound to cells (C) Antigens bound to antibodies (D) Antigens bound to MHC proteins

Last Answer : Answer : D

Hyperimmune serum is serum with a higher than normal level of _____. a. antigens b. antibodies c. toxins d. immune cells

Description : Hyperimmune serum is serum with a higher than normal level of _____. a. antigens b. antibodies c. toxins d. immune cells

Last Answer : b. antibodies

Which of the following statements is false regarding B cells? A- B cells can undergo class switching and produce a different antibody type B- B one marrow stem cells migrate to the thymus and develop into B cells C- B cells synthesize antibodies and put them on their cell surface D- B cells that recognize high concentrations of antigens (self) in the absence of other signals

Description : Which of the following statements is false regarding B cells? A- B cells can undergo class switching and produce a different antibody type B- B one marrow stem cells migrate to the thymus and ... D- B cells that recognize high concentrations of antigens (self) in the absence of other signals

Last Answer : B one marrow stem cells migrate to the thymus and develop into B cells

what is the difference between blood group A and group B (types of antibodies and antigens) ? -Biology

Description : what is the difference between blood group A and group B (types of antibodies and antigens) ? -Biology

Last Answer : answer:

A person with 'AB' blood group is sometimes called a universal recipient because of the – (1) lack of antigen in his blood (2) lack of antibodies in his blood (3) lack of both antigens and antibodies in his blood (4) presence of antibodies in his blood

Description : A person with 'AB' blood group is sometimes called a universal recipient because of the – (1) lack of antigen in his blood (2) lack of antibodies in his blood (3) lack of both antigens and antibodies in his blood (4) presence of antibodies in his blood

Last Answer : (2) lack of antibodies in his blood

Immunisation is a phenomenon of formation of antibodies by using inactive - (1) Antigens (2) Antibodies (3) Chemicals (4) Blood

Description : Immunisation is a phenomenon of formation of antibodies by using inactive - (1) Antigens (2) Antibodies (3) Chemicals (4) Blood

Last Answer : (1) Antigens Explanation: Whenever an antigen enters the blood, it binds itself with a special kind of white blood cell called lymphocyte. Each Lymphocyte produces only one kind of antibody.

Immunisation is a phenomenon of formation of antibodies by using inactive (1) Antigens (2) Antibodies (3) Chemicals (4) Blood

Description : Immunisation is a phenomenon of formation of antibodies by using inactive (1) Antigens (2) Antibodies (3) Chemicals (4) Blood

Last Answer : Antigens

Pathogenic bacteria secrete - (1) Antigens (2) Antibodies (3) Hormones (4) Interferons

Description : Pathogenic bacteria secrete - (1) Antigens (2) Antibodies (3) Hormones (4) Interferons

Last Answer : (1) Antigens Explanation: Pathogenic bacteria secrete various virulence factors, including toxins, lipases and pro-teases that allow them to infect, breakdown and colonize host tissue. Among ... while phospholipases cleaves and hydrolyzes the ester bonds of most phospholipids in cell membrane.

Passive artificial immunity occurs in the body when a/an _____ is injected into the body or when a developing fetus receives antibodies across the placenta. a. antibody-rich serum b. antigens c. haptens d. adjuvant

Description : Passive artificial immunity occurs in the body when a/an _____ is injected into the body or when a developing fetus receives antibodies across the placenta. a. antibody-rich serum b. antigens c. haptens d. adjuvant

Last Answer : a. antibody-rich serum

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

Last Answer : d. Is an antigen-presenting cell

The serological reaction where antigens and antibodies form an extensive Lattice of large particles is called a. Fixation. b. Precipitation. c. Neutralization. d. Agglutination.

Description : The serological reaction where antigens and antibodies form an extensive Lattice of large particles is called a. Fixation. b. Precipitation. c. Neutralization. d. Agglutination.

Last Answer : c. Neutralization.

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

Description : 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

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

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

Description : 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

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

Which type of hypersensitivity reaction involves immune complexes formed when antigens bind to antibodies? a) Type III Type III hypersensitivity is associated with systemic lupus erythematosus, rheumatoid arthritis, serum sickness, certain types of nephritis, and some types of bacterial endocarditis.

Description : Which type of hypersensitivity reaction involves immune complexes formed when antigens bind to antibodies? a) Type III Type III hypersensitivity is associated with systemic lupus erythematosus, rheumatoid ... , or delayed-type, hypersensitivity occurs 24-72 hours after exposure to an allergen.

Last Answer : a) Type III Type III hypersensitivity is associated with systemic lupus erythematosus, rheumatoid arthritis, serum sickness, certain types of nephritis, and some types of bacterial endocarditis.

What is the study of the interaction of antigens and antibodies called?

Description : What is the study of the interaction of antigens and antibodies called?

Last Answer : Serology

An antigens develop antibodies. The Antibody which protect the body from harmful bacteria and viruses are?

Description : An antigens develop antibodies. The Antibody which protect the body from harmful bacteria and viruses are?

Last Answer : Immunoglobulins

Drugs producing allergic reactions generally act as: A. Complete antigens B. Haptenes C. Antibodies D. Mediators

Description : Drugs producing allergic reactions generally act as: A. Complete antigens B. Haptenes C. Antibodies D. Mediators

Last Answer : B. Haptenes

Drugs producing allergic reactions generally act as: A. Complete antigens B. Haptenes C. Antibodies D. Mediators

Description : Drugs producing allergic reactions generally act as: A. Complete antigens B. Haptenes C. Antibodies D. Mediators

Last Answer : B. Haptenes

Haptens are: (1) Pseudoantigens (2) Incomplete antigens (3) Antibodies (4) Isoantigens

Description : Haptens are: (1) Pseudoantigens (2) Incomplete antigens (3) Antibodies (4) Isoantigens

Last Answer : Incomplete antigens

Pathogenic bacteria secrete (1) Antigens (2) Antibodies (3) Hormones (4) Interferons

Description : Pathogenic bacteria secrete (1) Antigens (2) Antibodies (3) Hormones (4) Interferons

Last Answer : Antigens

Which of the following statement(s) is/are true concerning ischemia reperfusion injury? a. During ischemia, ATP degradation results in increased plasma and intracellular levels of hypoxanthine and xanthene b. Oxygen free radicals such as the superoxide radical are involved in the expression of the proinflammatory phenotype of endothelial cells, macrophages and neutrophils c. The intracellular adhesion molecule-1 (ICAN-1) contributes to injury and disruption of the endothelial lining, with extensive capillary leak and resultant interstitial edema d. Animal models have demonstrated that passive immunization with antibodies to neutrophil adhesive complex lessen the ischemic/reperfusion microvascular injury

Description : Which of the following statement(s) is/are true concerning ischemia reperfusion injury? a. During ischemia, ATP degradation results in increased plasma and intracellular levels of ... immunization with antibodies to neutrophil adhesive complex lessen the ischemic/reperfusion microvascular injury

Last Answer : Answer: a, b, c, d During the ischemia and hypoperfusion phase, degradation of ATP stores essential to maintain cell integrity and significant loss of diffusible ... either the neutrophil adhesive complex or the endothelial selectins dramatically lessens ischemia/reperfusion microvascular injury

Which of the following statements about septic shock are true? A. A circulating myocardial depressant factor may account for the cardiac dysfunction sometimes seen with shock due to sepsis or SIRS. B. A cardiac index (CI) of 6 liters per minute per square meter of body surface, a pulmonary capillary wedge pressure of 15 mm. Hg, and a systemic vascular resistance index (SVRI) of 800 dynes-sec/(cm 5-m 2) is a hemodynamic profile consistent with septic shock. C. An increase in SvO 2 in septic patients may be explained by the finding of anatomic arteriovenous shunts. D. Results of human trials employing antimediator therapy, such as antiendotoxin antibodies, IL-1 receptor antagonist, and tumor necrosis factor (TNF) antibodies, have confirmed animal studies that demonstrate a significant im

Description : Which of the following statements about septic shock are true? A. A circulating myocardial depressant factor may account for the cardiac dysfunction sometimes seen with shock due to sepsis or ... animal studies that demonstrate a significant improvement in survival with the use of such agents.

Last Answer : Answer: AB DISCUSSION: Shock due to sepsis or SIRS frequently manifests as a hyperdynamic cardiovascular response, consisting of an elevated CI and a decreased SVR or SVRI. Occasionally, ... been encouraging thus far in human clinical trials, despite the promising results from many animal studies

What disease occurs when there is an abnormal increase in the number of white blood cells which results in fewer red blood cells carrying oxygen to body tissues?

Description : What disease occurs when there is an abnormal increase in the number of white blood cells which results in fewer red blood cells carrying oxygen to body tissues?

Last Answer : Leukemia

When assisting the patient to interpret a negative HIV test result, the nurse informs the patient that the results mean a) his body has not produced antibodies to the AIDS virus. A negative test result indicates that antibodies to the AIDS virus are not present in the blood at the time the blood sample for the test is drawn.

Description : When assisting the patient to interpret a negative HIV test result, the nurse informs the patient that the results mean a) his body has not produced antibodies to the AIDS virus. A negative test ... When antibodies to the AIDS virus are detected in the blood, the test is interpreted as positive.

Last Answer : a) his body has not produced antibodies to the AIDS virus. A negative test result indicates that antibodies to the AIDS virus are not present in the blood at the time the blood sample for the test is drawn.

Increase in the amount of bills payable results in---------- a) Decrease in cash b) Increase in cash c) No change in cash d) None of these

Description : Increase in the amount of bills payable results in---------- a) Decrease in cash b) Increase in cash c) No change in cash d) None of these

Last Answer : b) Increase in cash

Increase in the amount of bills receivable results in-------------- a) decrease in cash b) increase in cash c) no change in cash d) none of these

Description : Increase in the amount of bills receivable results in-------------- a) decrease in cash b) increase in cash c) no change in cash d) none of these

Last Answer : a) decrease in cash

Which of the following terms refers to a form of white blood cell involved in immune response? a) Lymphocyte Both B and T lymphocytes respond to exposure to antigens. b) Granulocyte Granulocytes include basophils, neutrophils, and eosinophils. c) Spherocyte A spherocyte is a red blood cell without central pallor, seen with hemolysis. d) Thrombocyte A thombocyte is a platelet.

Description : Which of the following terms refers to a form of white blood cell involved in immune response? a) Lymphocyte Both B and T lymphocytes respond to exposure to antigens. b) Granulocyte Granulocytes ... blood cell without central pallor, seen with hemolysis. d) Thrombocyte A thombocyte is a platelet.

Last Answer : a) Lymphocyte Both B and T lymphocytes respond to exposure to antigens.

In which type of shock does the patient experiences a mismatch of blood flow to the cells? a) Distributive Distributive or vasogenic shock results from displacement of blood volume, creating a relative hypovolemia. b) Cardiogenic Cardiogenic shock results from the failure of a heart as a pump. c) Hypovolemic In hypovolemic shock, there is a decrease in the intravascular volume. d) Septic In septic shock, overwhelming infection results in a relative hypovolemia.

Description : In which type of shock does the patient experiences a mismatch of blood flow to the cells? a) Distributive Distributive or vasogenic shock results from displacement of blood volume, ... intravascular volume. d) Septic In septic shock, overwhelming infection results in a relative hypovolemia.

Last Answer : a) Distributive Distributive or vasogenic shock results from displacement of blood volume, creating a relative hypovolemia.

Water hammer in a pipeline results from the (A) Bursting of pipelines due to closure by a valve (B) Rapid pressure change due to a rapid change in the rate of flow (C) Pressure increase due to closure of a valve resulting in decrease in rate of flow (D) None of these

Description : Water hammer in a pipeline results from the (A) Bursting of pipelines due to closure by a valve (B) Rapid pressure change due to a rapid change in the rate of flow (C) Pressure increase due to closure of a valve resulting in decrease in rate of flow (D) None of these

Last Answer : (B) Rapid pressure change due to a rapid change in the rate of flow

The cells which are responsible for the production of antibodies are – (1) red blood cells (2) neutrophils (3) lymphocytes (4) platelets

Description : The cells which are responsible for the production of antibodies are – (1) red blood cells (2) neutrophils (3) lymphocytes (4) platelets

Last Answer : (3) lymphocytes Explanation: An antibody (Ab), also known as an immunoglobulin (Ig), is a large Y-shaped protein produced by B-cells that is used by the immune system to identify and ... called antigens usually on the outside of an invading organism. This is called the antigen-antibody reaction.

In case of infection, following is the first line of defense B A. Antibodies B. Macrophages C. Red blood cells D. Platelets

Description : In case of infection, following is the first line of defense  B A. Antibodies B. Macrophages C. Red blood cells D. Platelets

Last Answer : Macrophages

In case of infection, following is the first line of defense B A. Antibodies B. Macrophages C. Red blood cells D. Platelet

Description : In case of infection, following is the first line of defense  B A. Antibodies B. Macrophages C. Red blood cells D. Platelet

Last Answer : Macrophages

The figure shows a human blood cell. Identify it and give its characteristics. Blood cell Characteristics (a) Basophil Secretes serotonin, inflammatory response (b) B-lymphocyte Forms about 20% of blood cells involved in immune response (c) Neutrophil Most abundant blood cells, phagocytic (d) Monocyte Lifespan of 3 days, produces antibodies

Description : The figure shows a human blood cell. Identify it and give its characteristics. Blood cell Characteristics (a) Basophil Secretes serotonin, inflammatory response (b) B-lymphocyte Forms about 20% of ... Most abundant blood cells, phagocytic (d) Monocyte Lifespan of 3 days, produces antibodies

Last Answer : (a) Basophil Secretes serotonin, inflammatory response

All the following are associated with hemolytic disease of the newborn except: a. It is one of the most common diseases among Americans. b. It may occur if an Rh (-) female conceives a child who is Rh (+). c. It involves a reaction between red blood cells and antibodies. d. It can be prevented by using rhogam. 16 Which one of the following applies to the

Description : All the following are associated with hemolytic disease of the newborn except: a. It is one of the most common diseases among Americans. b. It may occur if an Rh (-) female conceives a child who ... antibodies. d. It can be prevented by using rhogam. 16 Which one of the following applies to the

Last Answer : b. It may occur if an Rh (-) female conceives a child who is Rh (+).

What serologicaL test requires sheep red blood cells and a preparation of antibodies that recognizes the sheep red blood ceLls? a. ELISA b. Radioimmunoassay c. Immunodiffusion d. Complement fixation test

Description : What serologicaL test requires sheep red blood cells and a preparation of antibodies that recognizes the sheep red blood ceLls? a. ELISA b. Radioimmunoassay c. Immunodiffusion d. Complement fixation test

Last Answer : d. Complement fixation test

The cells which are responsible for the production of antibodies are (1) red blood cells (2) neutrophils (3) lymphocytes (4) platelets

Description : The cells which are responsible for the production of antibodies are (1) red blood cells (2) neutrophils (3) lymphocytes (4) platelets

Last Answer : lymphocytes

How can blood be Rh negative (with no antigens) and (for example) be AB (with AB antigens)?

Description : How can blood be Rh negative (with no antigens) and (for example) be AB (with AB antigens)?

Last Answer : It's sort of two different things. Blood type and Rh factor both do have to do with antigens/proteins in the blood. Blood type is inherited from your parents and you have either A, O, AB, or B. ... when you get a problem, and why blood type is so important. Do you need it defined more than that?

In the ABO system of blood groups, if both antigens are present but no antibody, the blood group of the individual would be (a) B (b) O (c) AB (d) A.

Description : In the ABO system of blood groups, if both antigens are present but no antibody, the blood group of the individual would be (a) B (b) O (c) AB (d) A.

Last Answer : (c) AB

The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC,because “O” in it refers to having (a) overdominance of this type on the genes for A and B types (b) one antibody only - either anti - A or anti - B on the RBCs (c) no antigens A and B on RBCs (d) other antigens besides A and B on RBCs

Description : The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because O in it refers to having (a) overdominance of this type on the genes for A and B types (b) one antibody ... on the RBCs (c) no antigens A and B on RBCs (d) other antigens besides A and B on RBCs

Last Answer : (c) no antigens A and B on RBCs

A high surface area to volume ratio in cells is important because it (a) Enables efficient transfer of wastes, nutrients and gases across the cell membrane (b) Prevents overproduction of cell proteins due to structural limitations (c) Allows many antigens on the surface for identification of self and non-self (d) Provides for better structural support to cope with external physical pressure

Description : A high surface area to volume ratio in cells is important because it (a) Enables efficient transfer of wastes, nutrients and gases across the cell membrane (b) Prevents overproduction of cell ... self and non-self (d) Provides for better structural support to cope with external physical pressure

Last Answer : Ans:(a)

Assertion : Artificially acquired passive immunity results when antibodies or lymphocytes produced outside the host are introduced into a host. Reason

Description : Assertion : Artificially acquired passive immunity results when antibodies or lymphocytes produced outside the host are introduced into a host. Reason

Last Answer : Assertion : Artificially acquired passive immunity results when antibodies or lymphocytes produced outside ... both the assertion and reason are false

According to which theory is the given statement correct ? Statement. B and T cells having receptors for self antigens, undergo programmed cell death

Description : According to which theory is the given statement correct ? Statement. B and T cells having receptors for self antigens, undergo programmed cell death

Last Answer : According to which theory is the given statement correct ? Statement. B and T cells having ... C. Wear and tear throry D. Immunological theory

MHC Class II proteins, in conjunction with antigens, are recognised by (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells

Description : MHC Class II proteins, in conjunction with antigens, are recognised by (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells

Last Answer : Answer : B

MHC class I proteins, in conjunction with antigens are recognised by (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells

Description : MHC class I proteins, in conjunction with antigens are recognised by (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells

Last Answer : Answer : A

The initiation of a humoral immune response involves a complex interaction of the antigen, cells and intercellular messengers. Which of the following statement(s) concerning the initiation of the humoral immune response is/are correct? a. Helper T lymphocytes stimulate B lymphocytes through secretion of cytokines such as interleukin 4 and 6 b. A number of cells can aid in presenting the antigen to the helper T cell including B lymphocytes and macrophages c. All antigens require coordinated efforts of the various cellular components of the immune system d. An antigen must be a living microorganism

Description : The initiation of a humoral immune response involves a complex interaction of the antigen, cells and intercellular messengers. Which of the following statement(s) concerning the initiation of the ... various cellular components of the immune system d. An antigen must be a living microorganism

Last Answer : Answer: a, b Stimulation of the immune system occurs after a variety of antigen-presenting cells (B lymphocytes, macrophages, dendritic cells, and Langerhans cells) act to engulf ... polysaccharides), most antigens require coordinated efforts of the various cellular components of the immune system

The following are true : a. the HLA proteins are found within the cytoplasm of the cells b. HLA class I antigens are expressed on all cells with nuclei c. HLA class II antigens presents the virus infected cells to cytotoxic T lymphocytes d. HLA genes are found on chromosome 6 e. HLA tissue typing is carried out in all forms of transplantation to prevent rejection

Description : The following are true : a. the HLA proteins are found within the cytoplasm of the cells b. HLA class I antigens are expressed on all cells with nuclei c. HLA class II antigens presents ... on chromosome 6 e. HLA tissue typing is carried out in all forms of transplantation to prevent rejection

Last Answer : HLA class I antigens are expressed on all cells with nuclei