Biochemistry UE Past Papers Questions.

1. Explain the reactions which take place in fatty acids, involving carboxylic group and hydrocarbon chain.Names of all reactants and  products should be clearly indicated.
2. Glycerol is required in the process of Triglycerides sythesis . Show how glycerol needed for this process is obtained in the body.
3. Explain the process of fat catabolism, by which the body obtains energy to run different functions when energy from carbohydrates is not available.

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UNSOLVED

1. Define the term phospholipid and clearly show the structure of a phospholipid.
2. Mention four alcohols which are found in phospholipids.
3. Explain the reactions of the fatty acids which involve the double bonds.
4. Fatty acids break down to produce Acetyl CoA which undergo oxidation in the Krebs Cycle to produce ATPs. Using a fatty acid with 16 carbon atoms, calculate the amount of energy which will be produced after the oxidation process?

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UNSOLVED

1. List five properties of enzymes
2. Explain the relationship between substrate and enzyme concentration.

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UNSOLVED

1. Mention five functions of Carbohydrate
2. i)How many ATP molecules are obtained from each molecule of CoA that completes Kreb`s Cycle

          ii) Describe how are the ATP molecules mentioned in b.(i) above derived from each molecule of Acetyl CoA that enter into Kreb`s Cycle.

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UNSOLVED

1. Briefly discuss the biological importance of proteins
2. With a brief explanation on each, outline any two limitations of analysis of peptides by aqueous acid hydrolysis.

Answer / Solution

UNSOLVED