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Basic Biology Question Paper

Basic Biology

Course:Certificate In Biology (Biology)

Institution: Kabarak University question papers

Exam Year:2008

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KABARAK UNIVERSITY
UNIVERSITY EXAMINATIONS
2008/2009 ACADEMIC YEAR
FOR THE CERTIFICATE OF PRE - UNIVERSITY BIOLOGY
COURSE CODE: PBIOL 021
COURSE TITLE: BASIC BIOLOGY II
STREAM: PRE – UNIVERSITY SEM II
DAY: THURSDAY
TIME: 2.00 – 4.00 P.M.
DATE: 11/12/2008
INSTRUCTIONS TO CANDIDATES:
Answer ALL questions in Section A and any Two questions in Section B
PLEASE TURN OVER
Page 2 of 2
Section A (40 marks)
1. Explain:
(a) Why protein is an important nutrient component in animals (3 marks)
(b) the role of the liver in processing ingested food (4 marks)
2. (a) Differentiate between the following ecological terms: community, ecosystem,
bi osp her e (3 marks)
(b) Outline two mechanisms by which populations interact (2 marks)
3. Outline the major characteristics of a bird’s respiratory system (3 marks)
4. (a) Define evolution and state 3 mechanisms by which evolution occurs (4 marks)
(b) Differentiate between Darwin and Larmack’s evolution theories (4 marks)
5. (a) In animals, movement is very important for two major reasons. Name them
(2 marks)
(b) Differentiate between the main skeleton types found in animals. (6 marks)
(c) Describe the events leading to a muscle contraction (3 marks)
6. (a) Outline the significance of the main fertilization types found in animals
(4 marks)
(b) By use of a diagram only, show reproduction by fission and give an example
o f an organism where it occurs (2 marks)
Section B (30 Marks)
7. Discuss the transport mechanisms of blood (15 marks)
8. Describe feedback mechanisms and outline the events that take place when the human
blood (i) pH falls below normal (ii) sugar rises above normal (15 marks)
9. Differentiate between the main circulatory systems found in animals and describe blood
circulation in mammals (15 marks)

Basic Biology Question Paper

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