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Ich 2106 Biochemistry I Question Paper

Ich 2106 Biochemistry I

Course:Bachelor Of Science In Public Health

Institution: Jomo Kenyatta University Of Agriculture And Technology question papers

Exam Year:2012

JOMO KENYATTA UNIVERSITY OF AGRICULTURE AND TECHNOLOGY
UNIVERSITY EXAMINATIONS 2012/2013
EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE IN PUBLIC HEALTH
ICH 2106 BIOCHEMISTRY I
DATE: AUGUST 2012 TIME: 2 HOURS
INSTRUCTIONS: ANSWER ALL QUESTIONS IN SECTION A AND ANY ONE IN SECTION B.

SECTION A – ANSWER ALL QUESTIONS (48 MARKS) EACH QUESTION IN THIS SECTION IS 6 MARKS
1. a. Describe the basic structural unit of a protein.
b. Briefly outline the levels of protein structure.
2. Describe briefly the features of a genetic code.
3. State the roles of carbohydrates in humans.
4. Define a nucleotile and list functions of nucleotides.
5. Enumerate main functions of vitamin C (ascorbic acid)
6. Minerals and micronutrients required for both physiological and biochemical functions. Name any six minerals whose presence in food is known to be toxic.
7. Describe the steps of an enzyme catalyzed reaction.
8. Giving examples, outline the functions of lipids.
SECTION B – ANSWER ONY ONE QUESTION (22 MARKS)
9. Discuss the urea cycle.
10. a. List the two sources of vitamin D
b. Outline the synthesis of vitamin D is the skin
c. How does calctitrol maintain plasma concentration levels of calcium?
11. Describe the structure and function of DNA.

Ich 2106 Biochemistry I Question Paper

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