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Pre – University Biology Question Paper

Pre – University Biology

Course:Pre-University Programme (Pre-University)

Institution: Kabarak University question papers

Exam Year:2011

KABARAK UNIVERSITY
UNIVERSITY EXAMINATIONS
2008/2009 ACADEMIC YEAR
FOR THE CERTIFICATE OF PRE- UNIVERSITY BIOLOGY
COURSE CODE: PBIOL 021
COURSE TITLE: PRE – UNIVERSITY BIOLOGY
STREAM: SEMESTER TWO
DAY: FRIDAY
TIME: 9.00 – 11.00 A.M.
DATE: 07/08/2009

INSTRUCTIONS:
Answer ALL questions in section A and any TWO from section B

SECTION A: (40 MARKS)

1. a) D ifferentiate between biotic and abiotic factors (2 marks)
b) Illustrate the ecological pyramid of biomass (4 marks)

2. Describe a mammalian systemic circulation (7 marks)
3. Explain:
1. Why protein is an important constituent of animal diet (3 marks)

2. The digestive role of the liver (5 marks)
4. a) O u tline the homeostatic role of the pancreas (2 marks)
b) Explain the homeostatic events that occur when blood sugar goes up (3 marks)

5. Differentiate between external and internal fertilization and state an advantage of each
(4 marks)
6. Describe the constituents of human blood and state 4 functions of blood in humans
(10 marks)

SECTION B: (30 MARKS)
7. Describe the basic principles of homeostasis and explain how they work to regulate
blood Ph (15 marks)

8. Describe various modes by which different animal groups carry out gaseous exchange
(15 marks)

9. With the aid of a well labeled diagram, describe the structure of a skeletal muscle cell
and explain how these structures relate to muscle contraction (15 marks)

Pre – University Biology Question Paper

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