Ich2106:Biochemistry I Question Paper
Ich2106:Biochemistry I
Course:Bachelor Of Science In Public Health
Institution: Meru University Of Science And Technology question papers
Exam Year:2011
QUESTION ONE (30 MARKS)
For the questions i) and ii) below, state if true or false against each statement. Each response is one (1) mark.
i. The following are characteristics of cholesterol; a) Contains 4 rings known a s steroid nucleas b) Is synthesized in animals only c) Is the parent compound from which other steroids; bile salts, bile acids and steroids are produced. d) Contains one hydroxyl group e) Is very water soluble. (5 Marks) ii. The components of phosphatic acid are; a) 1 phosphate, 1 glycerol and 1 chlorine b) 1 phosphate, 1 glycerol and 1 lecithin c) 1 phosphate, 1 glycerol and 1 fatty acid d) 1 phosphate, 1 glycerol and 2 fatty acid e) A phosphate, 1 glycerol and 3 fatty acid (5 Marks) iii. Complete the following table
Sugar derivative Example a Sugar acids b Sugar alcohols c Fucose d Clucose -6-phosphate e N - glycosides (5 Marks)
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iv. Give examples of homopolysaccharides. (5 Marks)
QUESTION TWO (20 MARKS)
a) Outline factors that determine enzyme activity. (5 Marks) b) Outline the properties of enzymes. (5 Marks) c) With examples, describe competitive inhibition. (5 Marks) d) Outline the classes of fatty acids. (5 Marks)
QUESTION THREE (20 MARKS)
a) Outline universal metabolities that give clues to common origin of life. (3 Marks) b) State the functions of triglycrides. (4 Marks) c) Give examples of phospholipids. (3 Marks) d) With examples, write brief notes on; i. Monosaccharides (hexase). (4 Marks) ii. Oligosaccharides (3 Marks) iii. Polypeptides (3 Marks)
QUESTION FIVE (20 MARKS)
a) Write notes on lipids under the following sub-headings i. Examples of glycerophospholipids (3 Marks) ii. Functions of waxes (3 Marks) iii. Examples of glycolipids. (2 Marks) iv. Functions of gangliosides. (2 Marks) b) i) Name sugar present in; i. milk ii. fruits iii. honey (3 Marks)
ii) Highlight the functions of carbohydrates. (4 Marks)
iii) Outline the derivatives of monosaccharides. (3 Marks)
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