Latest 2023 / 2024 | BIOS 242 Exam 2 Study Guide Fundamentals of Microbiology with Lab - Chamberlain
What are the stages of the normal growth curve in a bacterial culture?• Lag phase
• Exponential Growth Phase
• Stationary Phase
• Death Phase
What is lag phase?• Flat period when the population appears not to be growing; cells are not yet multiplying at their maximum rate.
What is exponential growth phase?• Period during which the growth curve increases geometrically
What is stationary growth phase?• Population enters survival mode; cells stop growing or grow slowly
What is death phase?• Cells begin to die an exponential rate 1 / 2
What does optimal (optimum) growth temperature mean?• Range of temperature that promotes the fastest rate of growth and metabolism
Photoautotroph • Captures energy from sunlight
Chemoautotroph • Energy source is simple inorganic chemicals
Photoheterotroph • Energy source is sunlight
Chemoheterotroph • Energy source is chemicals
What is the temperature of adaptation for psychrophiles?• Below 15 degrees celsius
What is the temperature of adaptation for psychrotrophs?• 15-30 degrees celsius
What is the temperature of adaptation for mesophiles?• 30-40 degrees celsius
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