The following points highlight the four main phases of growth in bacteria. The phases are: 1. Lag Phase 2. Log or Exponential Growth Phase 3. Stationary Phase 4. Death or Decline Phase. 1. Lag Phase: Lag phase represents a period of active growth during which bacteria prepare for reproduction, synthesizing DNA, various inducible enzymes, and […]
Growth in Bacteria: 4 Main Phases
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Microorganisms Found in Extreme Environment: 6 Groups
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The following points highlight the six important groups of microorganisms found in extreme environment. The groups are: 1. Acidophiles 2. Alkalophiles 3. Halophiles 4. Thermophiles and Hyperthermophiles 5. Psychrophiles 6. Barophiles. Group # 1. Acidophiles: Microorganisms that have their growth optimum between about pH 0 and 5.5. Several species of Thiobacillus and archaebacterial genera including […]
Generation Time of Bacteria: With Mathematical Expression
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In this article we will discuss about the generation time of bacteria. Most bacteria reproduce by binary fission, which results in doubling of the number of viable bacterial cells. Therefore, during active bacterial growth, the number of bacterial cells and, hence their population, continuously doubles at specific time intervals because each binary fission takes a […]
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