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Pph2312:Immunology Question Paper

Pph2312:Immunology

Course:Bachelor Of Science In Public Health

Institution: Meru University Of Science And Technology question papers

Exam Year:2011

INSTRUCTIONS: Answer all questions in section A and choose any other two questions from section B
SECTION A (30 MARKS)
QUESTION ONE
a) Differentiate between humoral and cell mediated immunity (4 marks)
b) Describe four cardinal signs of inflammation (4 marks)
c) With the aid of a sketch, describe the role played by IgE in allergic reactions (6 marks)
d) Distinguish between universal donors and universal recipients in blood grouping techniques
(4 marks)
e) Describe outoimmunity and give four examples of outoimmune diseases (6 marks)
f) Name three types of T. Lymphocytes and describe roles played by each in body defence
(6 marks)
SECTION B: CHOOSE ANY TWO QUESTIONS
QUESTION TWO
a) Discuss factors that make an antigen to be immunogenic (10 marks)
b) Using tetanus toxoid as an example, discuss the principle behind cross reaction (10 marks)
2
QUESTION THREE
Chebet, a Rhesus negative student became pregnant. She did not want her lecturers to know of her
pregnancy therefore, she quietly did an abortion. Ten years later, Chebet got married to Kipchumba.
Chebet and Kipchumba wanted to have a child, but this bore no fruit since Chebet’s pregnancies
resulted in still births. Discuss (20 marks)
QUESTION FOUR
a) Discuss the role played by CD4+(T.helper cells) in body defence, giving human
immunodeficiency virus as an example (10 marks)
b) Outline existing differences between first line defence mechanism (innate) and second line
defence mechanism (acquired immunity), giving examples of cells involved in each (10 marks)

Pph2312:Immunology Question Paper

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