Immunity (5 MCQS)

 Immune system and define its components:- Antigen- Antibody (structure of antibody)- Lymphocytes (B and T cells) What is cell mediated response and humoral immune response?  Types of Immunity:- Active immunity- Passive immunity What do you mean by vaccination?

1) The humoral immunity defends mostly against viruses and bacteria throgh a) Skinb) Digestive systemc) Body fluidsd) Internal organ

2) Which of the following is effective against viral infections? a) Active natural immunityb) Passive natural immunityc) Passive artificial immunityd) All

3) If a person suffers from small pox and develops immunity later on , this type of immunity is called a) Active natural immunityb) Active artificial immunityc) Passive artificial immunityd) Passive natural immunity

4) B-lymphocytes were discovered to have role in immune system from a) Birdsb) Frogc) Human beingsd) Bacteria

5) Immunogen isa) Antibodyb) Antigenc) Lymphocyted) Lipids

6) Autoimmunity against measles Is example ofa) Natural active immunityb) Natural passive immunityc) Artificial active immunityd) Artificial passive immunity

7) Immunoglobins are produced bya) Vertebratesb) Invertebratesc) All living organismsd) Antigens

8) Antibodies are secreted intoa) Tissue fluidsb) Lymphc) Bloodd) All

9) Which of the following is the unit of immune system?a) Parasitesb) Lymphocytesc) Antibodiesd) Both b and c

1) Antivenom is used in treatinga) Snake biteb) Measlesc) Small poxd) All

2) Antiserum is used fora) Passive immunityb) Autoimmune responsec) Active immunityd) All

3) T-cells respond to pathogens by producinga) Killer T-cellsb) Helper T-cellsc) Suppressor T-cellsd) All

4) Which of them is directly involved in phagocytosis?a) Neutrophilsb) B-cellsc) T-cellsd) Lymphocytes

5) What is the function of lymphocytes?a) Destruction of poisonous substancesb) Destruction of bacteriac) Destruction of RBCd) All

6) Immune system in our body constitutesa) 1st defense systemb) 2nd defense systemc) 3rd defense systemd) 4th defense system

7) The antibodies provided to infant through mother’s milk a) Natural active immunityb) Natural passive immunityc) Artificial passive immunityd) Artificial active immunity

8) The chemical nature of antibody isa) Glycoproteinb) Glycolipidsc) Polysaccharidesd) Lipoproteins

9) Which of the following is describes as vaccination?a) Artificial active immunityb) Artificial passive immunityc) Natural active immunityd) Natural passive immunity

1) Which chemicals are secreted by T-helper cells to stimulate B-plasma cells to divide a) Cytokinesb) Interferonsc) Histaminesd) Fibrins

2) B-lymphocytes and T-lymphocytes are formeda) Before birth in thymusb) Before birth in bone marrowc) After maturity in bloodd) After birth in blood

3) Skin and mucous membrane are part of body defense system and they form a) Physical barriersb) Chemical barriersc) Biological barriersd) Mechanical barriers

4) Antibodies are produced by which of the followinga) B-lymphocytesb) T-lymphocytesc) B- and T- lymphocytesd) A-lymphocytes

5) Snake bite is treated with which type of immunization?a) Activeb) Passivec) Humorald) Specific

6) T-lymphocytes become mature and competent under the influence of a) Thymus glandb) Bursa of fabriciusc) Spleend) Liver

7) Antigen is a foreign protein or any other molecule which stimulates the formation of a) B-lymphocytesb) MHC complexc) Antibodiesd) Immunogens

8) Chemical produced by micro-organisms which are capable of destrouying bacteria are known as a) Antigensb) Antibodiesc) Antisepticsd) Biocidal

9) Antibodies are actuallya) Glycoproeinsb) Glycolipidsc) Globular proteinsd) Fibrous proteins

1) Which of the following is effective against viral infections? a) Active natural immunityb) Active passive immunityc) Passive active immunityd) Passive natural immunity

2) Plasma cells are formed as a result of division ofa) B-lymphocytesb) T-lymphocytesc) A-lymphocytesd) Suppressor T-cells

3) Which bonds holds the chains in antibody?a) H-bondb) S-bondc) Bothd) None

4) Which decides that which antigen binds to antibodies particularly in the antibodies? a) Variable amino acids sequences in the light chainsb) Variable amino acids sequences in the upper regions of the heavy chains c) Bothd) None

5) What are the functions of T-cells?a) Recognize antigensb) Combat micro-organismsc) Rejection of foreign tissue( in case of tissue rejection) d) All