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Zool 232: Cell Biology Question Paper

Zool 232: Cell Biology

Course:Bachelor Of Biological And Biomedical Sciences

Institution: Laikipia University question papers

Exam Year:2014

LAIKIPIA UNIVERSITY

UNIVERSITY EXAMINATIONS.
FIRST SEMESTER 2014/2015 ACADEMIC YEAR.

ZOOL232:CELL BIOLOGY

MAIN CAMPUS.
Time:2hrs.

INSTRUCTIONS;
-Attempt all questions in section A and any other TWO questions in section B.
-Use pencil where applicable.

SECTION A.
1. i) Outline the functions and structure of the following organelles (4mks)
a) Rough endoplasmic reticulum
b) Golgi apparatus
ii) explain the functions of any two plastids found in plant cell (2mks)
2. a) Identify three major classes, composition of filaments that make up cytoskeleton and state the functions of each. (6mks)
b) Explain why the three classes of filaments that make up cytoskeleton would be plentiful in a muscle cell. (4mks)
3. Mitosis is divided into four stages;
a) In which of the stages of mitosis does spindle fibres contract into visible structures.
b) outline the functions or mitosis
c) How do the first and second meiotic divisions differ.
d) Outline possible errors and consequences of meiotic divisions. (4mks)
4.Discuss the structure and functions of glycocalyx and how it is important to both prokaryotic and eukaryotic cell (8mks)
5.a)Outline the causes of cellular aging and cell death (4mks)
b) Differentiate between chloroplasts and mitochondria (4mks)

SECTION B;(30marks)
6.Discuss the structure of mitochondria and process of energy production (15mks)
7.Discuss various systems of junctional complexes in animal cell: their structure and function. (15mks)
8.Discuss various ways by which substances enter and leave a cell. (15mks)

Zool 232: Cell Biology Question Paper

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