The Cell And Its External Environment Question Paper

The Cell And Its External Environment

Course:Bachelor Of Science

Institution: Kenyatta University question papers

Exam Year:2007

KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2007/2008
FIRST SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR OF
SCIENCE
SBC 101: THE CELL AND ITS EXTERNAL ENVIRONMENT

DATE: Tuesday, 27TH NOVEMBER 2007 TIME: 8.00 A.M. -10.00 A.M.

SECTION A: Answer Any Two questions. Each is 20 marks.

1. a)Describe:
i) The common features of biomembranes
ii) The structure of the nucleus & nucleoid

b)Discuss the various types of muscles.

2. a)Describe the composition of blood and explain the roles of each component.
b)Describe how proteins can be transported back to the Endoplasmic reticuluon
c)Explain the significance, of plasmids in prokaryotes

3. a)Discuss the structure of nerve cells and explain how they function in the
transmission of nerve impulses.
b)Explain the significance of inclusion bodies to bacterial cells

SECTION B: Answer ALL Questions. Each is 10 marks.

4. a)Giving examples where possible, describe the features of the major cytoskeleton
filaments found in eukaryotes.
b)Briefly explain the roles played by pili in cells.

5. Kidney cells entirely depends on -Glutamyl cycle for the uptake of nutrients such as
amino acids. Discuss.
6. Describe the functional ultrastructure of lysosomes and explain how they differ from
peroxisomes .

END

Describe the functional ultrastructure of lysosomes and explain how they differ from
peroxisomes .

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