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Pbiol 011: Basic Biology I Question Paper

Pbiol 011: Basic Biology I

Course:Certificate Of Pre-University Biology

Institution: Kabarak University question papers

Exam Year:2009

INSTRUCTIONS:
Answer All questions in Section A and Any TWO from Section B

SECTION A. (40 MARKS)
1. (a) What are the most common monosaccharide associated with living things. (5 Marks)
(b) Differentiate between a fat and an oil, and state some of the functions of fats and oils
in the body (5 Marks)
2. Name the major organelles of a Eukaryotic cell and describe their general functions.
(10 Marks)
3. Explain how the following processes affect the function of a living cell.
(i) Diffusion
(ii) Osmosis
(iii) Facilitated diffusion
(iv)Active transport
(v) Concentration gradient (10 Marks)
4. (a) Define Transpiration. (2 Marks)
(b) Discuss factors that influence transpiration and state how it is involved in the transport
of minerals in the xylem. (8 Marks)
SECTION B. (30 MARKS)
5. (a) What is Osmotic potential? (3 Marks)
(b) By use of a diagram explain the general anatomy of an angiosperm leaf. (5 Marks)
(c) How is this Anatomy related to the process of photosynthesis and transpiration?(7 Marks)
6. (a) By use of simple diagrams show the differences in the internal structure of a
monocotyledonous root to that of dicotyledonous root. (10 Marks)
(b) Describe the function of root-hairs. (5 Marks)
7. (a) Draw and label atypical flower. (5 Marks)
(b) Define pollination and differentiate between self and cross pollination. (5 Marks)
(c) Differentiate between growth and development. (5 Marks)

Pbiol 011: Basic Biology I Question Paper

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