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
1
INSTRUCTIONS: Answer question one and any other two questions
QUESTION ONE – (30 MARKS)
(a) Outline the meaning of the following terms used in immunological studies.
(i) Immunity (2 Marks)
(ii) Phagocytosis (2 Marks)
(iii) Antigens (2 Marks)
(iv) Antibodies (2 Marks)
(v) Apoptosis (2 Marks)
(b) Differentiate between antigenicity and immunogenicity. (4 Marks)
(c) Using a diagram, explain the hapten – carrier complex reaction. (6 Marks)
(d) Outline two main roles carried out by antibodies in a view to protect the body against
foreign substances. (4 Marks)
(e) Name three types of T. Lymphocytes involved in cell-mediated immunity. (6 Marks)
QUESTION TWO – (20 MARKS)
Discuss what happens during a non-specific immune response against invading pathogens.
(20 Marks)
QUESTION THREE – (20 MARKS)
(a) With the aid of a diagram, discuss the structure of immunoglobulin. (15 Marks)
(b) Name five types of immunoglobulins. (5 Marks)
2
QUESTION FOUR – (20 MARKS)
(a) Outline the full process of phagocytosis. (15 Marks)
(b) Derive the role of Antigen presenting cells in the linkage between innate immunity and
acquired immunity. (5 Marks)
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