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Exam (elaborations)

MBY 161 Theme 4 Exam Questions With Correct Answers.

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  • MBY 161
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  • MBY 161

©THEBRIGHTSTARS 2024 MBY 161 Theme 4 Exam Questions With Correct Answers. Physical aspects needed for bacterial growth - answer1. Temperature 2. pH 3. Osmotic pressure Chemical aspects needed for bacterial growth - answer1. Carbon 2. Nitrogen 3. Phosphorus 4. Sulfur 5. Oxygen 6. Organic...

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  • September 17, 2024
  • 4
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • MBY 161
  • MBY 161
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©THEBRIGHTSTARS 2024


MBY 161 Theme 4 Exam Questions With
Correct Answers.


Physical aspects needed for bacterial growth - answer✔1. Temperature
2. pH
3. Osmotic pressure

Chemical aspects needed for bacterial growth - answer✔1. Carbon
2. Nitrogen
3. Phosphorus
4. Sulfur
5. Oxygen
6. Organic growth substances

Temperature - answer✔1. Psychrophiles = Cold-loving microbes.
2. Mesophiles = Moderate-temperature loving microbes.
3. Thermophiles = Heat-loving microbes.
4. Psychotrophs = Microbes encountered in low-temperature food spoilage, growing fairly well
in refrigerator temperatures.
5. Hyperthermophiles = Extreme thermophiles

pH - answer✔Most bacteria grow best in pH near neutrality. Acidophiles = bacteria that are
remarkably tolerent for acidity.

Osmotic pressure - answer✔Plasmolysis = loss of water causing a shrinkage of cell's
cytoplasm.
Extreme Halophiles = organisms that are well adapted to high salt concentrations and requires it
for growth (obligate halophiles).
Faculative Halophiles = grow at salt concentrations up to 2%.

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