NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
JANUARY/FEBRUARY 2018 EXAMINATION

COURSE CODE:                                BIO 416

COURSE TITLE:              INDUSTRIAL MICROBIOLOGY

CREDIT UNIT:                  3

TIME ALLOWED:           2HOURS

TOTAL MARKS:               70%

INSTRUCTION: ANSWER FOUR QUESTIONS IN ALL BUT QUESTIONONEIS COMPULSORY

Q1a. Define the term Industrial Microbiology. 2marks

b. List three characteristics of micro-organisms that are suitable to an industrial microbiologist. 3marks

c. List four types of media used in microbiology4marks

d. List three methods used in isolating pure cultures of micro-organisms. 3marks

e. list five basic requirements of all microbes used for media formulation.5marks

f. state five criteria for media formulation. 5marks

22MARKS

Q2a. Explain the term Mutation.2marks

b. Briefly list the methods of strain selection in industrial microbiology.3marks

c.  Explain method of strain improvements. 7marks

 12MARKS

Q3a. Define the term Recombinant DNA Technology2marks

b. list the technologies behind the production of a genetically engineered bacterium.7marks  12MARKS

c.  Explain how hybridization takes place in some lower fungi?3marks

Q4a. What is Marshing ?3marks

b. Explain briefly the three widely contrasting Marshing processes.7marks

c. state the role of probiotics in the diet of man.2marks

12MARKS

Q5a. What are Antifoams? 2marks

b. List four properties of Antifoams?8marks

c. list two factors that must be considered when constructing a fermenter. 2marks                                                                                                                                                             

12MARKS

Q6a. State the role of malting in Alcoholic Beverages production. 5marks

b.  List the three processes involved in malting.3marks.            

c. briefly explain the process of beer production.4marks          

12MARKS