Lesson 5: Microbial Growth and Control Flashcards
Series of biochemical reactions by which the cell breaks down or biosynthesizes various metabolites.
Metabolism
It is primarily composed of elements C, H, N, O, P, and S.
Cell
Requires a core set of nutrients.
Microbes
What nutrients are required in large amounts?
Micronutrients
What nutrients are required in minute amounts?
Macronutrients.
Name the 4 Physico-chemical requirements in growing microbes.
- Temperature
- pH
- Osmotic Pressure
- Chemical
What are the 3 primary groups in temperature?
- Psychrophiles
- Mesophiles
- Thermophiles (Hyperthermophiles & Extreme thermophiles)
A classified primary group in temperature where it loves a moderate-temperature (25-40C). It is a common type of microbe.
Mesophiles
Cold-loving microbes at 0C.
Psychrophiles
Heat-loving microbes at 50-60C.
Thermophiles
It has an optimum growth temperature of 60C or higher.
Hyperthermophiles
Heat-loving microbes at 121C and above.
Extreme thermophiles
What is the best narrow pH range that a bacteria could grow to?
Between 6.5 to 7.5
Bacteria that love acid environments.
Acidophiles
What do you call the water pressure required for the growth of a microbe.
Osmotic Pressure