Micr 221 - Module 1 Exam Questions With
Correct Answers
What are the 4 physical growth requirements? - CORRECT ANSWER✔✔-
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1. gaseous environment
| | |
2. temperature
|
3. pH
|
4. osmotic pressure
| |
what effects the availability of water? - CORRECT ANSWER✔✔-1.
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temperature
What is the most favourable osmotic environment for a cell? Why? -
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CORRECT ANSWER✔✔-isotonic - same conc. inside and outside of cell,
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that's always tries to get to equilibrium.
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What type of bacteria grow best between -5-20 degrees? - CORRECT
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ANSWER✔✔-psychrophiles
What type of bacteria grow best between -3-35 degrees? - CORRECT
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ANSWER✔✔-psychrotrophs
,What temperature do mesophiles grow best at? - CORRECT
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ANSWER✔✔-14 - 44 degrees | | |
What type of bacteria grow best between 43-80 degrees? - CORRECT
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ANSWER✔✔-Thermophiles?
What temperature do thermophiles grow best at? - CORRECT
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ANSWER✔✔-65-105 degrees |
What are nanhalphiles? - CORRECT ANSWER✔✔-NaCl conc <1 favoured
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What's a moderate halophile? - CORRECT ANSWER✔✔-NaCl conc 0.4-
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3.4 favoured
|
What's a halotolerant? - CORRECT ANSWER✔✔-NaCl conc 0-3 favoured
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What's a extreme halophile? - CORRECT ANSWER✔✔-NaCl conc above
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2 favoured
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What are organisms called when they are organised according to their
| | | | | | | | | | |
energy source? - CORRECT ANSWER✔✔-1. phototrophs
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2. chemotrophs
| |
or |
,1. lithotroph
|
2. organotroph
|
What is an phototroph? - CORRECT ANSWER✔✔-energy source from
| | | | | | | | |
ligh
What is a chemotroph? - CORRECT ANSWER✔✔-energy source is
| | | | | | | | |
chemicals
What are organisms called when they are organised according to their
| | | | | | | | | | |
carbon source? - CORRECT ANSWER✔✔-1. autotroph
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2. heterotrpho
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What is an autotroph? - CORRECT ANSWER✔✔-uses only inorganic C
| | | | | | | | | |
(CO2)
What is a heterotroph? - CORRECT ANSWER✔✔-uses organic C
| | | | | | | |
What is a lithotroph? - CORRECT ANSWER✔✔-electron source from
| | | | | | | | |
reduced inorganic substances
| |
What is a organotroph? - CORRECT ANSWER✔✔-electron source from
| | | | | | | | |
reduced organic substances
| |
, What are the elements that the microbes need a lot of? - CORRECT
| | | | | | | | | | | | |
ANSWER✔✔-macronutrients
What are the macronutrients? - CORRECT ANSWER✔✔-C
| | | | | |
N
P
S
O
H
What are the micronutrients? - CORRECT ANSWER✔✔-Zn
| | | | | |
Co
Mo
Cu
Mn
What are the implications of bacteria having a slow MGT? - CORRECT
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ANSWER✔✔-Implications for drug therapy: | | |
- the bacteria is taken up very slowly
| | | | | | | |
- patient would need to be treated for longer
| | | | | | | |
- use up a lot of the patient's energy.
| | | | | | | |
Correct Answers
What are the 4 physical growth requirements? - CORRECT ANSWER✔✔-
| | | | | | | | |
1. gaseous environment
| | |
2. temperature
|
3. pH
|
4. osmotic pressure
| |
what effects the availability of water? - CORRECT ANSWER✔✔-1.
| | | | | | | | |
temperature
What is the most favourable osmotic environment for a cell? Why? -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-isotonic - same conc. inside and outside of cell,
| | | | | | | | | |
that's always tries to get to equilibrium.
| | | | | |
What type of bacteria grow best between -5-20 degrees? - CORRECT
| | | | | | | | | | |
ANSWER✔✔-psychrophiles
What type of bacteria grow best between -3-35 degrees? - CORRECT
| | | | | | | | | | |
ANSWER✔✔-psychrotrophs
,What temperature do mesophiles grow best at? - CORRECT
| | | | | | | | |
ANSWER✔✔-14 - 44 degrees | | |
What type of bacteria grow best between 43-80 degrees? - CORRECT
| | | | | | | | | | |
ANSWER✔✔-Thermophiles?
What temperature do thermophiles grow best at? - CORRECT
| | | | | | | | |
ANSWER✔✔-65-105 degrees |
What are nanhalphiles? - CORRECT ANSWER✔✔-NaCl conc <1 favoured
| | | | | | | |
What's a moderate halophile? - CORRECT ANSWER✔✔-NaCl conc 0.4-
| | | | | | | |
3.4 favoured
|
What's a halotolerant? - CORRECT ANSWER✔✔-NaCl conc 0-3 favoured
| | | | | | | |
What's a extreme halophile? - CORRECT ANSWER✔✔-NaCl conc above
| | | | | | | | |
2 favoured
|
What are organisms called when they are organised according to their
| | | | | | | | | | |
energy source? - CORRECT ANSWER✔✔-1. phototrophs
| | | | | |
2. chemotrophs
| |
or |
,1. lithotroph
|
2. organotroph
|
What is an phototroph? - CORRECT ANSWER✔✔-energy source from
| | | | | | | | |
ligh
What is a chemotroph? - CORRECT ANSWER✔✔-energy source is
| | | | | | | | |
chemicals
What are organisms called when they are organised according to their
| | | | | | | | | | |
carbon source? - CORRECT ANSWER✔✔-1. autotroph
| | | | |
2. heterotrpho
|
What is an autotroph? - CORRECT ANSWER✔✔-uses only inorganic C
| | | | | | | | | |
(CO2)
What is a heterotroph? - CORRECT ANSWER✔✔-uses organic C
| | | | | | | |
What is a lithotroph? - CORRECT ANSWER✔✔-electron source from
| | | | | | | | |
reduced inorganic substances
| |
What is a organotroph? - CORRECT ANSWER✔✔-electron source from
| | | | | | | | |
reduced organic substances
| |
, What are the elements that the microbes need a lot of? - CORRECT
| | | | | | | | | | | | |
ANSWER✔✔-macronutrients
What are the macronutrients? - CORRECT ANSWER✔✔-C
| | | | | |
N
P
S
O
H
What are the micronutrients? - CORRECT ANSWER✔✔-Zn
| | | | | |
Co
Mo
Cu
Mn
What are the implications of bacteria having a slow MGT? - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-Implications for drug therapy: | | |
- the bacteria is taken up very slowly
| | | | | | | |
- patient would need to be treated for longer
| | | | | | | |
- use up a lot of the patient's energy.
| | | | | | | |
