Pbiol 021: Basic Biology Ii Question Paper
Pbiol 021: Basic Biology Ii
Course:Certificate Of Pre-University Biology
Institution: Kabarak University question papers
Exam Year:2010
COURSE CODE: PBIOL 021
COURSE TITLE: BASIC BIOLOGY II
STREAM: SEMESTER TWO
DAY: FRIDAY
TIME: 2.00 – 4.00 P.M.
DATE: 10/12/2010
INSTRUCTIONS:
Answer ALL questions in SECTION A and ANY TWO from SECTION B
SECTION A (40MARKS)
1. Giving examples define the following terms (8 marks)
a) Carrying capacity
b) Ultra filtration
c) Negative feedback mechanism
d) Counter flow system
2. a) Explain briefly what digestion is? (2 marks)
b) Explain what happens to food material in the following parts of the digestive
system.
i) Mouth (3 marks)
ii) Duodenum (3 marks)
3. Explain how the body mechanisms work to:-
a) Reduce blood sugar level (4 marks)
b) Decrease body temperature (4 marks)
4. Describe the events which take place during expiration in a mammal (8 marks)
5. a) What do you understand by the term double circulation (2 marks)
c) Describe the circulation in a mammalian heart (6 marks)
SECTION B (30MARKS)
6. Discuss the biotic factors that influence distribution of organisms (15 Marks)
7. Write an essay on the respiratory structures of amphibians (15 marks)
8. Describe gametogenesis in mammals. (15 marks)
More Question Papers