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.
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.
Description : What type of immune cell may control IgE-mediated hypersensitivities? a. Suppressor T cells b. Plasma cells c. Cytotoxic T cells d. Neutrophils
Last Answer : a. Suppressor T cells
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.
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.
Description : The early response in asthma is due to activity. a. Cytotoxic T Cell b. Basophil c. TH2 Cell And NI( Cell d. Dendritic Cells
Last Answer : c. TH2 Cell And NI( Cell
Description : The cytotoxic T cells have a_____ co-receptor while the helper T cells have a _____ co-receptor. a. CD8. CD4 b. CD4, CD8 c. MHCI, MHCII d. MHCII, MHCI
Last Answer : a. CD8. CD4
Description : Cytotoxic T cells release which 2 toxic proteins as they fight target cells? a. histamine and heparin b. perforin and granzymes c. interleukin and interferon d. lysozymes and cytokines
Last Answer : b. perforin and granzymes
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.
Description : TH1 cells activate a. B cells. b. Killing of pathogens in macrophages. c. Cytotoxic T cells. d. Humoral immunity.
Last Answer : d. Humoral immunity
Description : Cytotoxic T-cells can be recognized by which of the following cell surface marker? A- CD4 B- CD7 C- CD8 D- CD9
Last Answer : CD8
Description : CD8 surface antigen is present in A- cytotoxic T cells B- .suppresssor T cells C- both (a) and (b) D- none of these
Last Answer : both (a) and (b)
Description : Systemic _____ is the most dangerous form of a Type I Hypersensitivity. a. Anaphylaxis b. Unconsciousness c. Edema d. Prostaglandins
Last Answer : a. Anaphylaxis
Description : In Type I hypersensitivity the first dose of antigen is the _____. a. Immunizing Dose b. Sensitizing Dose c. Allergizing Dose d. Activating Dose
Last Answer : b. Sensitizing Dose
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.
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
Description : Which of the following mediates Type I hypersensitivity reaction? A- IgE B- IgG C- IgM D- IgD
Last Answer : IgE
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
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
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
Last Answer : .All of the 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
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 (+).
Description : Some scientists‘ estimate that in nature, _____ of all microbial activities occur in biofilms. a. 0.25 b. 0.33 c. 0.45 d. 0.6 e. 0.99
Last Answer : e. 0.99
Description : Food must be moist, with a minimum water content of _____before contamination by microorganisms and spoilage can occur. a. 18% to 20% b. 10 to 15% c. 5 to 10% d. 0 to 5%
Last Answer : a. 18% to 20%
Description : .______ enters the human body as a cyst and develops into a trophozoite in the small intestine; a severe form of dysentery may occur. a. Cryptosporidium parvum b. Entamoeba histolytica c. Giardia intestinalis d. Cyclospora cayetanensis
Last Answer : b. Entamoeba histolytica
Description : Answer: b, c, d Eosinophils constitute 1% to 3% of the leukocyte population of the bloodstream. They also reside in tissues and they exhibit phagocytic capabilities. They are less ... the cycle of events that result in recruitment and activation of inflammatory cells at sites of inflammation
Last Answer : Cellular injury from oxidants may be manifest by which of the following? a. Cell membrane lipid peroxidation b. DNA strand breaks c. Cytoskeletal disassembly d. ATP depletion
Description : Abnormalities in chromosome number give rise to diseases of karyotype. How might these aberrations occur?
Last Answer : Under usual conditions of meiotic division, each tetrad separates into its constituent homologous chromosomes. One homologue migrates to one pole and the other homologue to the opposite pole during ... and internal inversion of chromosomes or chromosome parts may also produce diseases of karyotype.
Description : The fungal diseases histoplasmosis and blastomycosis both a. Occur in the United States. b. Affect the human brain and spinal cord. c. Are due to fungi that grow as a mycelium in the body. d. Are accompanied by the production of aflatoxins.
Last Answer : a. Occur in the United States.
Description : The oncogene theory states that transforming genes a. Normally Occur In The Host Genome. b. Can Exist In Viruses. c. Are Not Of Viral Origin. d. All Of The Above (A—C) Are Correct.
Last Answer : d. All Of The Above (A—C) Are Correct
Description : Conjugation pili are found only on some ______ bacteria, though it may occur between cells of various bacteria. a. Gram-positive b. Gram-negative c. Acid-fast d. Capsule containing
Last Answer : b. Gram-negative
Description : Which one of the following is common between prokaryotic and eukaryotic chromosomes? a. Presence or absence of introns. b. Loop or linear chromosomes. c. Genetic recombination occurrence in RNA. d. Mutations occur in the DNA.
Last Answer : d. Mutations occur in the DNA.
Description : The cell reproduction in bacteria may occur by A.binary fission B.budding C.fragmentation D.all of these
Last Answer : D.all of these
Description : If the Keq for an enzymatic reaction is greater than 1, the reaction A- will be endergonic B- can not occur without the input of energy C- both (a) and (b) D- none of these
Last Answer : none of these
Description : The cooci which mostly occur in single or pairs are A- Streptococci B- Diplococci C- Tetracocci D- None of these
Last Answer : Diplococci
Description : The cooci which mostly occur in single or pairs are A- Streptococci B- .Diplococci C- .Tetracocci D- None of these
Last Answer : .Diplococci
Description : What is needed in order for reactions to occur at body temperatures? a. buffers b. acids c. bases d. enzymes
Last Answer : d. enzymes
Description : An ___________ solution which consists of solutes in water, is essential for chemical reactions to occur. a. hydrophobic b. aqueous c. covalent d. vitreous
Last Answer : b. aqueous
Description : The following are true about the ABO and rhesus (Rh) system: a. a person of group O is a universal donor b. a person who is group AB has anti-A and anti-B antibodies c. the presence of the D antigen means that the subject is Rh positive d. rhesus antibodies occur naturally
Last Answer : the presence of the D antigen means that the subject is Rh positiv
Description : Type I ADR reactions is___________ a) Caused when T-cells bind to a specific antigen b) Caused by tissue injury c) IgE mediated d) Caused by cytotoxic antibodies
Last Answer : c) IgE mediated
Description : A healthy person can be diagnosed as having a infection with the multiplication of bacterial cells in the blood. a. Primary; bacteremia b. Primary; vermeil c. Primary; septicemia d. Secondary; parasitemia
Last Answer : c. Primary; septicemia
Description : Human immunodeficiency virus destroys (A) Cytotoxic T cells (B) Helper T cells (C) B cells (D) Plasma cells
Last Answer : Answer : B
Description : Cytotoxic T cells release (A) Perforins (B) Interleukins (C) Colony stimulating factors (D) Tumour necrosis factor
Description : CD 3 complex and p 56lck proteins are present in (A) Cytotoxic T cells (B) Helper T cells (C) Both (A) and (B) (D) None of these
Last Answer : Answer : D
Description : CD 4 is a transmembrane glycoprotein present in (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells
Last Answer : Answer : A
Description : CD 8 is a transmembrane glycoprotein present in (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells
Last Answer : Answer : C
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
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
Description : The most abundant T cells are (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells
Description : Which of the following statements regarding the complement system are true? a. Complement activation yields products which are directly cytotoxic as well as products which act indirectly via activated ... and classical pathways converge proximal to generating the membrane attack complex (C5b-9)
Last Answer : Answer: a, d The complement system is composed of two different but linked sequences, the classic and alternative pathways. The pathways involve serum proteins that act to amplify the inflammatory-immune ... the C5 level proximal to generating the membrane attack complex (C5b-9) (Figure 6-3)