Why do we fall in Class 9 Science MCQ test

Q 1 –  Which of the following could be a cause f or developing a disease?
(a) Exercising properly
(b) Having a balanced diet
(c) Poor personal hygiene
(d) Getting enough sleep

Q 2 –  Sleeping sickness is caused by ____________, a protozoan.
(a) Trypanosoma
(b) Euglena
(c) Plasmodium
(d) Amoeba

Q 3 –  Identify the group among the following, which contains all bacterial diseases :
(a) Typhoid, tuberculosis, anthrax
(b) Malaria, anthrax, typhoid
(c) Kala-azar, influenza, tuberculosis
(d) Tuberculosis, anthrax, dengue

Q 4 –  Which is not a contributory cause of a person acquiring a water borne disease?
(a) Lack of sufficient food
(b) Attack by bacteria
(c) Genetic susceptibility to the disease
(d) Lack of clean drinking water

Q 5 –  Suzan’s grandfather is suffering from tuberculosis. In which category will you put his disease?
(a) Chronic and acute both
(b) She cannot predict anything from this information.
(c) Chronic
(d) Acute

Q 6 –  We should not allow mosquitoes to breed in our surroundings because they
(a) multiply very fast and cause pollution
(b) are vectors f or many diseases
(c) bite and cause skin diseases
(d) are not important insects

Q 7 –  The process in which the active immune system employs many cells to the affected tissue, is
called
(a) infection
(b) infestation
(c) invasion
(d) inflammation

Q 8 –  Choose the wrong statement:
(a) High blood pressure is caused by excessive weight and lack of exercise
(b) Cancers can be caused by genetic abnormalities
(c) Peptic ulcers are caused by eating acidic food
(d) Acne is caused by Staphylococci

Q 9 –  What is the importance of childhood immunisation programmes?
(a) These programmes give protection only when the child reaches adult stage.
(b) These programmes give lifelong protection against several infectious diseases
(c) These progremmes give temporary protection against diseases
(d) These programmes improve the health of some children

Q 10 –  The vector f or Yellow f ever is:
(a) Mosquito
(b) Flea
(c) Housefly
(d) Rat

Q 11 –  Rejection of transplanted organ is prevented by regular use of
(a) Cyclosporin
(b) Calcitonin
(c) Thrombin
(d) Pyroxin

Q 12 –  Which one of the following is not a viral disease?
(a) Dengue
(b) AIDS
(c) Typhoid
(d) Influenza

Q 13 –  The diseases where microbes are the immediate causes, are called
(a) infectious diseases
(b) non-infectious diseases
(c) chronic diseases
(d) acute diseases

Q 14 –  Antibiotics used in treatment of bacterial and fungal diseases are
(a) the names of useful bacteria
(b) toxins produced by bacteria
(c) drugs manufactured to kill viruses
(d) products of metabolism in some bacteria

Q 15 –  Acute diseases last f or:
(a) Long period of time
(b) Only few hours
(c) Short period of time
(d) Life long

Q 16 –  Antibiotics do not work against viral infections because
(a) viruses live only inside host cells.
(b) viruses do not have metabolic pathways of their own,
(c) viruses are resistant to antibiotics.
(d) the protein coat of viruses acts as a barrier to the antibiotics

Q 17 –  Public cleanliness is important f or individual health’. Which of the following is an example of this statement?
(a) Brushing our teeth and taking bath everyday keeps our body clean
(b) Collecting and cleaning of garbage cans on the street regularly helps to prevent the spread of diseases
(c) Clean rooms in our houses are essential f or healthy living
(d) Cutting nails regularly prevents dirt accumulation and infection in the nails

Q 18 –  The organisms which carry the infectious agents from a sick person to another potential host
are known as
(a) Fomites
(b) Causative agents
(c) Vectors
(d) Vehicles

Q 19 –  Which one of the following is not a bacterial disease?
(a) Cholera
(b) Tuberculosis
(c) Anthrax
(d) Influenza

Q 20 –  Which of the following bacteria cause peptic ulcer?
(a) Helicobactor chlolecystus
(b) Helicobactor salomonis
(c) Helicobactor pylori
(d) Helicobactor hepaticus

Q 21 –  Vectors can be defined as
(a) animals carry the infecting agents from sick person to another healthy person
(b) microorganisms which cause many diseases
(c) infected person
(d) diseased plants

Q 22 –  It was found that milkmaids who had cowpox did not suffer from smallpox later?
(a) Since small pox virus is closely related to cowpox virus.
(b) Scientists have not yet worked out the reason f or this.
(c) Since cowpox is more deadly than smallpox.
(d) Since smallpox is more deadly than cowpox.

Q 23 –  Viruses, which cause hepatitis, are transmitted through
(a) air
(b) personal contact
(c) food
(d) water

Q 24 –  Jaundice is a disease of
(a) kidney
(b) liver
(c) pancreas
(d) duodenum

Q 25 –  How does penicillin kill bacteria?
(a) Penicillin makes holes in the cell membrane.
(b) Penicillin interferes with the bacterial metabolism.
(c) Penicillin inhibits protein synthesis.
(d) Penicillin prevents cell wall formation.

Q 26 –  Which one of the following has a long term effect on the health of an individual?
(a) Common cold
(b) Chicken pox
(c) Chewing tobacco
(d) Stress

Q 27 –  AIDS cannot be transmitted by
(a) sexual contact
(b) hugs
(c) breast feeding
(d) blood transfusion

Q 28 –  A condition of failure of f unction of kidney to from urine is
(a) Creatinine
(b) Hematuria
(c) Alkaptoneuria
(d) Anuria

Q 29 –  The set of diseases which spread through sexual contact as well as through placenta to the
foetus are
(a) Malaria and AIDS
(b) AIDS and Syphili
(c) Syphilis and Malaria
(d) AIDS and Cancer

Q 30 –  Malarial parasite after entering the human body reaches the
(a) liver and then RBCs
(b) stomach and then RBCs
(c) liver and then WBCs
(d) stomach and then salivary glands

Q 31 –  Which one of the following causes kala-azar?
(a) Ascaris
(b) Trypanosoma
(c) Leishmama
(d) Bacteria

Q 32 –  Which of the following is not a symptom of any disease?
(a) Meningitis
(b) Headache
(c) Cough
(d) Swelling

Q 33 –  Which of the following organism causes acne?
(a) Trypanosoma
(b) Lactobacillus
(c) Staphylococcus
(d) Plasmodium

Q 34 –  Which one of the following is not a viral disease?
(a) Dengue
(b) AIDS
(c) Typhoid
(d) Influenza

Q 35 –  Which one of the following is not a bacterial disease?
(a) Cholera
(b) Tuberculosis
(c) Anthrax
(d) Influenza

Q 36 –  Which one of the following disease is not transmitted by mosquito?
(a) Brain fever
(b) Malaria
(c) Typhoid
(d) Dengue

Q 37 –  Which one of the following disease is not caused by bacteria?
(a) Typhoid
(b) Anthrax
(c) Tuberculosis
(d) Malaria

Q 38 –  Which one of the following diseases is caused by protozoans?
(a) Malaria
(b) Influenza
(c) AIDS
(d) Cholera         

Q 39 –  Which one of the following has a long term effect on the health of an individual?
(a) Common cold
(b) Chicken pox
(c) Chewing tobacco
(d) Stress

Q 40 –  Which of the following can make you ill if you come in contact with an infected person?
(a) High blood pressure
(b) Genetic abnormalities
(c) Sneezing
(d) Blood cancer

Q 41 –  AIDS cannot be transmitted by
(a) sexual contact
(b) hugs
(c) breast feeding
(d) blood transfusion

Q 42 –  Making anti-viral drugs is more difficult than making anti-bacterial medicines because
(a) viruses make use of host machinery
(b) viruses are on the border line of living and non-living
(c) viruses have very few biochemical mechanisms of their own
(d) viruses have a protein coat

Q 43 –  Which one of the following causes kala-azar?
(a) Ascaris
(b) Trypanosoma
(c) Leishmania
(d) Bacteria

Q 44 –  If you live in a overcrowded and poorly ventilated house, it is possible that you may suffer from which of the following diseases:
(a) Cancer
(b) AIDS
(c) Air borne diseases
(d) Cholera

Q 45 –  Which disease is not transmitted by mosquitoes?
(a) Dengue
(b) Malaria
(c) Brain fever or encephalitis
(d) Pneumonia

Q 46 –  Which one of the following is not important for individual health?
(a) Living in clean space
(b) Good economic condition
(c) Social equality and harmony
(d) Living in a large and well furnished house

Q 47 –  Choose the wrong statement.
(a) High blood pressure is caused by excessive weight and lack of exercise.
(b) Cancers can be caused by genetic abnormalities.
(c) Peptic ulcers are caused by eating acidic food.
(d) Acne in not caused by staphylococci.

Q 48 –  We should not allow mosquitoes to breed in our surroundings because they
(a) multiply very fast and cause pollution
(b) are vectors for many diseases
(c) bite and cause skin diseases
(d) are not important insects

Q 49 –  You are aware of Polio Eradication Programme in your city. Children are vaccinated because
(а) vaccination kills the polio causing microorganisms
(b) prevents the entry of polio causing organism
(c) it creates immunity in the body
(d) all the above

Q 50 –  Viruses, which cause hepatitis, are transmitted through
(a) air
(b) water
(c) food
(d) personal contact

Ans. (b) water

Q 51 –  Vectors can be defined as
(a) animals carry the infecting agents from sick person to another healthy person
(b) microorganisms which cause many diseases
(c) infected person
(d) diseased plants

Q 52 –  Which of the following is the literal meaning of disease?
(a) Being happy
(b) Being unaware
(c) Being uncomfortable
(d) Being uncomplicated