Page 1 - 3- Home assignment II ( worksheet)- Principles of Treatment
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SAI International School
                                                  Subject- Biology
                                           Chapter- Why do we fall ill?
                                       Subtopic- Principles of Treatment
                                                      Module-22
                                               Home Assignment II

                                                    WORKSHEET-1
                 Q1.  Which substance is/are produced within an organism to prevent the spread of
                        microorganism?
                        A) Antiseptics
                        B) Antibiotics
                        C) Antibodies
                        D) All of these
                 Q2.  Select the incorrect statement.
                        (a) Vaccines  are  preparations  of  antigenic  proteins  which  generate
                           permanent passive immunity against all pathogens.
                        (b) First vaccine was formed by Edward Jenner.
                        (c) DPT is a vaccine that provides immunity for three different diseases.
                        (d) Tetanus is caused by a rod shaped bacterium.
                 Q3.  Introducing dead or weakened germs in the body of living being for
                        developing immunity for a specific disease is called:
                        (a) Pathogenicity
                        (b) Immunization
                        (c) Antibiotic
                        (d)  Antigen - antibody complex
                        DIRECTION : Question nos. 4 and 5 below consist of two statements -
                        Assertion (A) and Reason (R). Answer these questions selecting the
                        appropriate option given below:
                        a)  Both A and R are true and R is the correct explanation of A.
                        b)  Both A and R are true but R is not the correct explanation of A.
                        c)  A is true but R is false.
                        d)  A is false but R is true.
                        e)  Both Assertion and Reason are false.
                 Q4.  Assertion: Polio is known to cause paralysis and crippling in large number of
                        children every year.
                        Reason:  Government has started a Polio Eradication Programme.
                 Q5.  Assertion: Haemophilia is a congenital disease.
                        Reason: Haemophilia is caused by a gene mutation during one's own life
                        span.
                 Q6.  Name any three diseases transmitted through vectors.
                 Q7.  Why is AIDS considered to be a ‘Syndrome’ and not a disease?
                 Q8.  Becoming  exposed  to  or  infected  with  an  infectious  microbe  does  not
                        necessarily mean developing a noticeable disease. Explain.
                 Q9.  Discuss the causes, symptoms, preventive measures and treatment of AIDS.
                 Q10.  What is immunity? Explain natural and acquired immunity.
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