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Basic Metabolism Question Paper

Basic Metabolism 

Course:Bachelor Of Science In Biotechnology Biotechnology

Institution: University Of Nairobi question papers

Exam Year:



UNIVERSITY OF NAIROBI
FIRST SEMESTER EXAMINATIONS 2005/2006
SECOND YEAR EXAMINATIONS FOR THE DEGREE OF BACHELOR OF SCIENCE
SBL 205: BASIC METABOLISM
DATE: 21, FEBRUARY, 2006 TIME: 2:00 PM - 4:00 PM
Answer all questions from SECTION A and TWO from SECTION B
SECTION A (30 MARKS)
1. Distinguish between catabolic and anabolic reactions. Describe the foods required for proper metabolism.
2. Define the term feedback mechanism and discuss its essential components.
3. Outline the process of photo phosphorylation.
4. Describe the main factors that affect basal metabolic rate in animals.
5. With the aid of a well-labelled diagram, explain how photo systems I and II operate together.
6. Briefly describe how CO2 is fixed in C4 plants (Illustrate your answer with a formula)
7. What is the role of transketolase during re-arrangement of sugar phosphates. Give an example.
8. What is the significance of Ca++ ions during enzymatic breakdown of triglycerides?
9. Write the sequence during the reduction of nitrate to the amino is the form during nitrogen fixation.
10. What is the role of TCA cycle during metabolism.
SECTION B
(20 MARKS EACH)
1. Certain species of plants which grow in hot climates have evolved alternate modes of carbon fixation that minimize photo respiration.
2. Describe the various forms of measuring and estimating energy
expenditure in animals.
3. Discuss how ammonia is assimilated during the formation of compounds and describe the key bio synthetic pathways of various amino acids.
4. Describe how saturated fatty acids are synthesized and oxidized as a source of energy, during lipid metabolism.






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