Answer to Question #207357 in Microbiology for Dagmawi Minilik

Question

Submission date:20/06/2021

Instructions: 

√Attempt all questions

√Try to write precise and to the point explanations to each of the questions

√The maximum number of pages should not exceed 7

1. Describe in detail how abiotic factors affect the distribution of microorganisms in the aquatic ecosystem.

2. Explain about all the organisms which are used as indicators of water pollution.

3. Write a synopsis (general information) about bacteria which are found in surface waters and the diseases caused by them.

4. Describe the phenotypic approaches which are being used to assess the diversity of microorganisms in water.

Answer 1

1: Temperature affects the metabolic rate of organisms underwater because organisms survive in different ranges of temperatures. Other organisms utilize organic compounds in water for energy. Different microorganism goes for light and others live different salinity.

2: Escherichia coli organism indicates water pollution because it is transmitted to water bodies through fecal matter.

Plankton indicates water pollution. It is found in seafood and can lead to death.

3: Most bacteria found on the water surface are usually from human and animal fecal matter. Such bacteria lead to certain diseases. Vibrio cholerae bacteria cause cholera, and the amoeba is caused by protozoans and typhoid by salmonella enterica.

4: Bacteriological water analysis method is used to estimate the number and sort of bacteria present in water.