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Boic 305: Question Paper

Boic 305:

Course:Bachelor Of Science

Institution: Egerton University question papers

Exam Year:2012

SECTION A: ANSWER ALL QUESTIONS

1.(a) What are some of the pre-requisites for using micro-organism to manufacture an industrial product. (3 Marks)
(b) Why is milk an excellent bacteriological culture? (2 Marks)
(c) Identify the predominant types of bacteria responsible for the biochemical changes in milk and give their uses. (3 Marks)
(d) Outline the microbial product of yoghurt. (5 Marks)
2.(a) Explain why it is important to treat sewage before disposal. (3 Marks)
(b) Describe three ways in which sewage treatment can be of economic importance to our society. (3 Marks)
3. Explain how microbial enzymes are used industrially. (5 Marks)
4. Identify the micro-organism and describe the general biochemical process involved in the production of food yeast. (6 Marks)
5. Explain how the normal food chain has been affected by various industrial contaminants. (6 Marks)
6. Briefly describe the production of SCP, safety, acceptability and toxicological limitations. (4 Marks)

SECTION B

7.(a) Explain how the three principle types of fermentation are exploited commercially. (3 Marks)
(b) Describe in details the process of beer manufacture. (5 Marks)
(c) Which contaminants are likely to be present in alcoholic beverages? (2 Marks)
8. Explain clearly the various techniques of enzyme immobilization, advantages and disadvantages of immobilization. (10 Marks)
9.(a) What is a bioreactor? (1 Mark)
(b) What steps are followed in the setting up of a production unit? (2 Marks)
(c) Compare the batch with continuous modes of action of bioreactors. (4 Marks)
(d) Give three advantages of batch culture techniques in industries. (3 Marks)

Boic 305: Question Paper

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