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Actinomycetes & Non Sporing Anaero.
Algae
Antibody
Antigen Antibody Reaction
Antimicrobial Chemotherapeutic Agent
Bacillus
Bacteria
Bacteria Morphology
Bacteriophages
Brucella
Cell Cultivations
Cell Cultures and Characteristics
Clostridium
DNA Replication
DNA Sequencing, Mutation and Repair
Energy Release and Conservation
Enzyme Reaction
Enzymes Regulation
Fish and Sea Foods
Food Illness
Fruits and Vegetables
Fungi - Molds and Yeasts
Growth and Nutrition of Bacteria
Heated Canned Foods
Hepatitis Viruses
Identification of Bacteria
Immune Response
Industrially Useful Microbial Processes
Micro Organisms
Microbes in Aquatic Environment
Microbial Genetics
Microbial Metabolism
Microbial Recomb. & Gene Transfer
Microbiology of Foods
Microbiology of Soils
Microbiology of Waste Water
Microorganisms and Disease
Milk and Milk Products
Miscellaneous Foods
Mycobacterium
Nucleic Acid Structure
Physical and Chemical Agents
Polymerase Chain Reaction
Poultry, Egg and Meat
Poxviridae and Picronaviridae
Protozon
Pseudomonas and Burkholderia
Retroviridae
Rhabdoviridae, Caliciviridae & Astrovi.
Sauerkraut and Pickles
Spirochacter and Enterobacteriaceac
Staplylococcus
Streptococcus
Transcription
Translation and Regulation
Vibrio, Aeromonas and Plesiomonas
Viruses
Viruses From Animal and Plants
Viruses in Eukaryotes
Wine and Beer
Home⇒ Medical Science⇒ Microbiology⇒ Immune system
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q1 ⇒ Which of the following expresses CD3 surface antigen? T cells [other wrong options] [Discuss in forum] Granulocytes Monocytes B cells |
Q2 ⇒ Which of the following proteins would not need localization signal? A cytosolic protein [other wrong options] [Discuss in forum] A nuclear protein A protein bound to the endoplasmic reticulum (ER) membrane A cell surface protein |
Q3 ⇒ Which of the following statements is false regarding B cells? B one marrow stem cells migrate to the thymus and develop into B cells [other wrong options] [Discuss in forum] B cells can undergo class switching and produce a different antibody type B cells synthesize antibodies and put them on their cell surface B cells that recognize high concentrations of antigens (self) in the absence of other signals undergo apoptosis in the bone marrow |
Q4 ⇒ Large parasites such as helminthes may be killed extracellularly by the action of eosinophils [other wrong options] [Discuss in forum] basophils monocytes neutrophils |
Q5 ⇒ Treatment with bacterial endotoxins results blast formation in B cells [other wrong options] [Discuss in forum] T cells monocytes none of these |
Q6 ⇒ Which of the following is correct? T Cell receptors are generated by random assortment of gene cassettes [other wrong options] [Discuss in forum] All T Cells are CD4+ An epitope can have multiple antigens MHC Class II molecules are generated by random assortment of gene cassettes |
Q7 ⇒ Major Histo Compatibility Complex (MHC) is a collection of genes arrayed on chromosome 6 in man, chromosome 17 in mice [other wrong options] [Discuss in forum] chromosome 21 in man, chromosome 6 in mice chromosome 6 in man, chromosone 21 in mice chromosome 17in man, chromosome 6 in mice |
Q8 ⇒ Natural killer cells are involved in all of these [other wrong options] [Discuss in forum] tumour rejection allograft rejection non-specific killing of virus transformed target cells |
Q9 ⇒ Numerous antibodies can be prepared, against one antigen, each binds to unique epitopes. How is this antibody diversity generated? Both (a) and (b) [other wrong options] [Discuss in forum] By rearrangements of the DNA encoding the variable regions of the heavy and light chains By the combination of different heavy and light chains that form the antigen binding site Antibody proteins can physically change their shape to bind different epitopes |
Q10 ⇒ T cell receptors (or TCR) on CD4+ T cells recognize peptides associated with MHC class II molecules [other wrong options] [Discuss in forum] recognize peptides not associated with MHC molecules recognize peptides associated with MHC class I molecules are secreted out into the environment to bind antigens |
Q11 ⇒ The role of the M cell is to pass bacteria or virus to underlying macrophages for processing and presentation of antigen [other wrong options] [Discuss in forum] trap virus in mucus and prevent entry induce apoptosis in virus-infected small intestinal epithelia cells they use their cilia to propel mucus out of the small intestine |
Q12 ⇒ Passive immunization is done for diphtheria [other wrong options] [Discuss in forum] tuberculosis enteric fever all of these |
Q13 ⇒ Which is not an antigen-presenting cell (or APC)? Polymorphonuclear leukocyte (or PMN) [other wrong options] [Discuss in forum] B cell Dendritic cell All of the above |
Q14 ⇒ Lysozyme is present in saliva [other wrong options] [Discuss in forum] sweat Cerebro spinal fluid (CSF) urine |
Q15 ⇒ Which of the following is correct for isoantigens? They are antigens found in some members of a species [other wrong options] [Discuss in forum] They are antigens found in all members of different species They are antigens found in all members of a species They are antigens found in some members of different species |
Q16 ⇒ Chemically an antigen may be any of these [other wrong options] [Discuss in forum] lipid protein polysaccharide |
Q17 ⇒ Macrophages are professional antigen- presenting cells. The protein molecule through which they present antigen in human is CD8 [other wrong options] [Discuss in forum] actin interleukin HLA |
Q18 ⇒ CD8 surface antigen is present in both (a) and (b) [other wrong options] [Discuss in forum] cytotoxic T cells suppresssor T cells none of these |
Q19 ⇒ Which of the following(s) is/are the determinants of antigenicity? All of these [other wrong options] [Discuss in forum] Chemical nature Size of the antigen Foreignness |
Q20 ⇒ Which of the following is correct for CD8 T cells? CD8 T cells can kill individual virus-infected cells in a contact dependent fashion [other wrong options] [Discuss in forum] CD8 T cells only recognize virus-infected cells CD8 T cell receptor recognizes epitopes that are also commonly recognized by B cells In the thymus, CD8 T cells undergo positive selection only, whereas CD4 T cells undergo negative selection only |
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