Micro Organism Mcqs Pdf,

                                                 Micro Organism Mcqs Pdf, Bellow Side

• MCQ1: Diseases which are caused by micro-organisms are called
• A.   contagious
• B.   venereal
• C.   infectious
• D.   incurable
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• Answer C
• MCQ2: A medicine which contain dead or weakened germs is used to prevent infectious disease is called a
• A.   antiseptic
• B.   antibodies
• C.   antibiotics
• D.   vaccine
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• Answer D
• MCQ3: Viruses are made up of
• A.   DNA
• B.   RNA
• C.   protein coat
• D.   all of them
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• Answer D
• MCQ4: Transfusion of infected blood is main reason for spread of diseases like
• A.   AIDS
• B.   Hepatitis B
• C.   both a and b
• D.   Polio
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• Answer C
• MCQ5: The use of organisms specially micro-organisms in the manufacture or industrial processes is called
• A.   biotechnology
• B.   bioengineering
• C.   chemical process
• D.   genetic engineering
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• Answer A
• 6: Polio can lead to
• A.   paralysis
• B.   nervous system distracted
• C.   both a and b
• D.   eye diseases
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• Answer C
• 7MCQ: Bacteria are
• A.   non-living
• B.   unicellular organisms
• C.   multicellular organisms
• D.   complex organisms
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• Answer B
• 8MCQ: Viruses are not regarded as living things because they cannot
• A.   survive
• B.   reproduce
• C.   attack host cell
• D.   invade
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• Answer B
• 9MCQ: Female anopheles mosquito spread
• A.   Malaria
• B.   Dengue
• C.   Polio
• D.   Rubella
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• Answer A
• 10MCQ: Bacterial diseases includes
• A.   diphtheria
• B.   SARS
• C.   small pox
• D.   dengue fever
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• Answer A
• MCQ11: Germs spread in the form of
• A.   clusters
• B.   droplets
• C.   gases
• D.   air
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• Answer B
• MCQ12: The vectors which conduct germs includes
• A.   fleas
• B.   tick
• C.   lice
• D.   all of them
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• Answer D
• MCQ13: The bacteria which have ability t o convert milk sugar in to lactic acid is called
• A.   lactobacillus
• B.   streptococcus
• C.   gram positive bacteria
• D.   gram negative bacteria
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• Answer A
• MCQ14: To fight against diseases human beings have special
• A.   natural barriers
• B.   immune system
• C.   both a and b
• D.   antibiotics
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• Answer C
• MCQ15: Ability to eat away germ is specialty of
• A.   red blood cell
• B.   white blood cell
• C.   liver
• D.   plasma
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• Answer B
• MCQ16: The thread like structure which helps bacteria to move is called
• A.   flagella
• B.   chromosome
• C.   cell wall
• D.   nucleus
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• Answer A
• MCQ17: A medicine which is used to treat or cure bacterial diseases by killing or stopping their growth of bacteria is called
• A.   antibody
• B.   antigen
• C.   antibiotics
• D.   antiseptics
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• Answer C
• MCQ18: The introduction of dead or weak germs in to body orally or by injection to train body to fight the real germs on attack is called
• A.   vaccination
• B.   immunization
• C.   both a and b
• D.   infecting
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• Answer C
• MCQ19: Unicellular microscopic fungi are
• A.   yeast
• B.   mould
• C.   toadstool
• D.   penicillium
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• Answer A
• MCQ20: The deadly disease which is caused by a parasitic micro-organism called plasmodium is
• A.   Malaria
• B.   Dengue
• C.   Polio
• D.   Rubella
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• Answer A
• MCQ21: The enzymes which digest the outer layer of bacteria are called
• A.   lysosomes
• B.   chromosomes
• C.   ribosome
• D.   Golgi bodies
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• Answer A
• MCQ22: Proteins which defend body are called
• A.   antigens
• B.   antibodies
• C.   disinfectant
• D.   antiseptics
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• Answer B
• MCQ23: The important decomposers include
• A.   bacteria
• B.   fungi
• C.   both a and b
• D.   virus
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• 24Answer C
• MCQ: Anti-microbial compounds includes
• A.   antiseptic
• B.   disinfectants
• C.   both a and b
• D.   antibiotics
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• Answer C
• MCQ25: A bacterial cell lacks
• A.   flagella
• B.   chromosome
• C.   cell wall
• D.   nucleus
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• Answer D
• MCQ26: Sweat, saliva, tears and mucus have
• A.   lysosomes
• B.   chromosomes
• C.   ribosome
• D.   Golgi bodies
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• Answer A
• MCQ27: AIDS, poliomyelitis, rabies, rubella are all
• A.   viral
• B.   bacterial
• C.   fungal
• D.   yeast
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• Answer A
• MCQ28: Germs on floor and non-living things are destroyed by
• A.   antiseptic
• B.   disinfectants
• C.   both a and b
• D.   antibiotics
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• Answer B

• MCQ29: A fungus which is used to make antibiotic is called
• A.   mould
• B.   yeast
• C.   penicillium
• D.   hyphae
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• Answer C
• MCQ30: The outer layer of human skin is composed of
• A.   mucus
• B.   collenchymas cells
• C.   dead cells
• D.   transporting cells
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• Answer C
• MCQ31: Germs on living things can be killed by using
• A.   antiseptic
• B.   disinfectants
• C.   both a and b
• D.   antibiotics
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• Answer A
• MCQ32: The human skin is tough and water proof and germs cannot
• A.   penetrate through
• B.   stay on it
• C.   reproduce
• D.   enter from cut
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• Answer A
• MCQ33: Most of bacteria in food is killed in stomach by
• A.   HCl
• B.   NaCl
• C.   HNO
• D.   H2O
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• Answer A
• MCQ34: The examples of microscopic organisms are
• A.   bacteria
• B.   micro-scopic fungi
• C.   both a and b
• D.   virus
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• Answer C
• MCQ35: The cell wall of yeast is made up of
• A.   chitin
• B.   cellulose
• C.   water
• D.   salts
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• AnswerA 
• CQ: Prevention is better than
• A.   treatment
• B.   cure
• C.   medicine
• D.   exercise
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• Answer B
• MCQ36: Germs may enter the body via
• A.   mouth
• B.   skin
• C.   eyes
• D.   all of them
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• Answer D
• MCQ37: Systems which open to external environment are protected from bacteria by presence of
• A.   mucus membranes
• B.   HCl
• C.   hairs
• D.   plug
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• Answer A
• MCQ38: The agents which are responsible to cause infection by micro-organisms are called
• A.   pathogens
• B.   DNA
• C.   antibody
• D.   antigen
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• Answer A
• MCQ40: Flu, cold and HIV are caused due to presence of
• A.   bacteria
• B.   virus
• C.   yeast
• D.   fungi
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• Answer B
• MCQ41: Bacteria can exists in shapes which are
• A.   spherical
• B.   rod
• C.   spiral
• D.   all of them
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• Answer D
• MCQ42: Living things which are too small to be seen with a naked eye are called
• A.   micro-organisms
• B.   unicellular organisms
• C.   multicellular organisms
• D.   complex organisms
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• Answer A
• MCQ43: Mushrooms, yeasts, moulds and toadstools are examples of
• A.   bacteria
• B.   virus
• C.   fungi
• D.   algae
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• Answer C
• MCQ44: Contaminated water may lead to
• A.   dysentery
• B.   food poisoning
• C.   flu
• D.   common cold
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• Answer A
• MCQ45: Baker's yeast produce gas which helps in rising of dough it is
• A.   oxygen
• B.   hydrogen
• C.   carbon dioxide
• D.   nitrogen
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• AnswerC 
• MCQ46: The first antibiotic which was discovered by
• A.  Alexander Fleming
• B.   Lewis
• C.   Thomson
• D.   Lois Pasteur
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• Answer A
• MCQ47: Penicillium is used to treat infections which are
• A.   viral
• B.   bacterial
• C.   fungal
• D.   yeast
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• Answer B
• MCQ48: Permanent damage to skin, nerves, limbs and eyes if they are left untreated occurs in
• A.   leprosy
• B.   typhoid
• C.   cholera
• D.   rubella
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• Answer A
• MCQ49: An infection which is characterized by ringed shaped itchy and scaly patches on skin is called
• A.   ringworm
• B.   leprosy
• C.   mildew
• D.   rust
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• Answer A
• MCQ50: Fungal infections in plants includes
• A.   rust
• B.   mildew
• C.   blight
• D.   all of them
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• AnswerD
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