Upload NowThis article throws light upon the three ways for the measurement of bacterial growth. The ways are: 1. Determination of the Number of Cells. 2. Determination of Cell Mass 3. Determination of Cell Activity. Way # 1. Determination of the Number of Cells Directly: Breed Method: A known volume of cell suspension (0.01 ml) is […]
Measurement of Bacterial Growth: 3 Ways
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Symbiotic and Non-Symbiotic Nitrogen Fixing Bacteria
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After reading this article you will learn about the symbiotic and non-symbiotic nitrogen fixing bacteria. Symbiotic N2-Fixing Bacteria: The heterotrophic bacteria that fix di-nitrogen gas (N2) from the atmosphere in plant root nodules (symbiotic bacteria) have a mutually beneficial relationship with their host plants. Legumes (pod-bearing plants such as peas, beans, alfalfa and clovers etc.) […]
Growth of Micro-Organisms: 4 Factors
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This article throws light upon the four important physical factors that affect the growth of micro-organisms. The factors are: 1. Temperature 2. Gaseous Requirements 3. Hydrogen Ion Concentration 4. Miscellaneous Physical Requirements. Factor # 1. Temperature: Temperature is the most important factor than determines the rates of growth, multiplication, survival, and death of all living […]