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Bota 415: Cell Biology 2009 Question Paper

Bota 415: Cell Biology 2009

Course:Bachelor Of Education Science

Institution: Kabarak University question papers

Exam Year:2009

COURSE CODE: BOTA 415
COURSE TITLE: CELL BIOLOGY
STREAM: SESSION VII
DAY: MONDAY
TIME: 2.00 – 4.00 P.M.
DATE: 30/11/2009

INSTRUCTIONS:
Attempt all Questions in Section A and Any Two in Section B

SECTION A (40 MARKS)
1. (a) Describe the molecular structure of cell organelles. (2 Marks)
(b) Describe the chemical composition of cellulose. (2 Marks)
2. (a) Describe four differences between the nature of DNA found in eukaryotes
and that of prokaryotes. (4 Marks)
(b) Explain the relationship between endoplasmic reticulum and Golgi apparatus.
(2 Marks)
3. (a) Explain the meaning of ‘oxidative phosphorylation’. (2 Marks)
(b) Describe how materials move from one cell to another. (1 Mark)
(c) Explain the relationship between vacuoles and endoplasmic reticulum. (2 Marks)
4. (a) Explain the difference between oxidative phosphorylation in mitochondria and
oxidative phosphorylation in chloroplasts. (2 Marks)
(b) Describe three characteristics of prokaryotic cells. (3 Marks)
5. (a) Describe two characteristics of sclereids. (2 Marks)
(b) Describe the composition of the ‘stele’’. (3 Marks)
6. (a) With aid of a well labelled diagram, explain the structure of bileaflet model of
plasma membrane. (3 Marks)
(b) Describe three characteristics of Robertson’s unit membrane. (3 Marks)
7. (a) Describe two components of active transport. (2 Marks)
(b). Explain the difference between exocytosis and endocytosis. (2 Marks)
8. (a) Describe the composition of genephore. (2 Marks)
(b) Describe three functions of nuclear matrix. (3 Marks)

SECTION B (30 MARKS)
9. Describe the composition and functions of the mitochondrial complexes associated
with the inner membrane. (15 Marks)
10. Describe the structure and functions of the various plant cells. (15 Marks)
11. Describe the composition of plasma membrane as proposed by Singer
and Nicolson. (15 Marks)

Bota 415: Cell Biology 2009 Question Paper

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