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Hfn 212: Nutrition Biochemistry Question Paper

Hfn 212: Nutrition Biochemistry

Course:Bachelor Of Science In Food, Nutrition And Dietetics

Institution: Kenyatta University question papers

Exam Year:2012

KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2011/2012
SECOND SEMESTER EXAMINATION FOR THE DEGREE OF BACHALOR OF SCIENCE (FOODS, NUTRITION AND DIETETICS)
HFN 212: NUTRITION BIOCHEMISTRY
DATE: MONDAY 2ND APRIL 2012 TIME: 8.00 A.M. – 10.00 A.M.
INSTUCTION:
Answer ALL the questions.
1. a) Explain the phases of glycolysis (4 marks)
b) Write an equation summarizing glycolysis and gluconegenesis pathways (8 marks)
2. a) Discuss two factors that determine the protein quality of a food (6 marks)
b) Define and list the essential amino acids. Which amino acids are regarded as semi-indispensable? Explain. (8 marks)
3. a) Explain the glucose tolerance test and glycemic index of a food (4 marks)
b) Explain the relationship between urea excretion and high protein intake (4 marks)
4. a) Define tans fatty acids and explain why they are not desirable in foods. (4 marks)
b) Describe the primary and tertiary structure of proteins (8 marks)
5. a) list four functions of lipids in the body (4 marks)
b) describe five classes of enzymes and give an example of each (8 marks)
6. a) Explain the significance of Glucose Alanine Cycle (6 marks)
b) Explain oxidation stress and the role of tocopherols (vitamine E) in defenses against it. (6 marks)

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