W1-2-60-1-6
JOMO KENYATTA UNIVERSITY OF AGRICULTURE AND TECHNOLOGY
UNIVERSITY EXAMINATIONS 2020/2021
YEAR III EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE IN MICROBIOLOGY (MAJOR) AND BACHELOR OF SCIENCE IN PLANT ECOLOGY AND ENVIRONMENTAL STUDIES (PLEES)

SBT 2410:  ENVIRONMENTAL MICROBIOLOGY

DATE:   JANUARY, 2021				        		  TIME:  2 HOURS

INSTRUCTIONS:  Answer Question ONE (Compulsory) and Any Other TWO Questions.

Question One – 30 Marks 

a)	Describe nutrient acquisition of microbes based on trophic levels.	[6 marks]

b)	Briefly describe aquatic micro organisms.	[6  marks]

c)	Briefly discuss the soil algae.		[6 marks]

d)	Describe the marine habitats as a host of micro organisms.	[6 marks]

e)	Describe microbes involved in biomining.	[6 marks]

Question Two – 20 Marks

Discuss microbial biofilms.

Question Three – 20 Marks

Discuss the role of microbes in the removal of toxic wastes from the environment.

Question Four – 20 Marks

Discuss degradation of plastics.