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Bota 415: Cell Biology Session Vi &Amp; Vii Question Paper

Bota 415: Cell Biology Session Vi &Amp; Vii

Course:Bachelor Of Education Science

Institution: Kabarak University question papers

Exam Year:2010

INSTRUCTIONS:
ANSWER ALL QUESTIONS IN SECTION A AND ANY TWO IN SECTION B

SECTION A (40 MARKS)
1. (a) The building blocks are identical in all organisms. Explain three generalisations
that can be made from this statement. (3 marks)
(b) Describe the types and roles of the various plastids found in plant cells. (4 marks)
2. (a) Explain the types and properties of lipids found in plasma membrane. (5 marks)
(b) Describe five types of phospholipids found in plasma membrane. (5 marks)
3. (a) Explain with aid of a well labelled diagram, the structure of plasma membrane
bileaflet model. (4 marks)
(b) Describe the types of common sugars that are associated with proteins. (6 marks)
4. (a) Describe the levels of chromatin organization. (3 marks)
(b) Describe the functions of nucleolus. (5 marks)
5. (a) Explain how chemiosmosis works during oxidative phosphorylation. (5 marks)

SECTION B (30 MARKS)
6. Discuss the composition and functions of the mitochondrial complexes associated
with the inner membrane. (15 marks)
7. Discuss the structure and functions of the various plant cells. (15 marks)
8. Describe the composition of plasma membrane as proposed by Singer and Nicolson.
(15 marks)

Bota 415: Cell Biology Session Vi &Amp; Vii Question Paper

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