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WorksheetsFactors affecting bacterial growth
Total questions: 15
Worksheet time: 8mins
Which is the following the main requirement(s) for the bacteria to grow ?
Nutrient requirement
Oxygen requirement
Oxygen and nutrient requirement
Physical and chemical requirement
Psychrophiles are those bacteria that able to grow under........
0-20 C
25 - 40 C
50 - 60 C
70 - 110 C
Osmosis is one of the process in the passive transportation. What is the movement of water when there's high solute concentration outside the cell ?
Water moves from inside to outside the cell
Water moves from outside to inside the cell
There is no movement of water molecules
The chemical growth requirements essential for bacterial growth are ...?
Water,carbon,Nitrogen & sulphur
Water
Water,carbon,oxygen,phosphorus,Nitrogen,sulphur and other trace elements
Environmental waste
Bacteria that are able to get their carbon source from organic compounds are called?
Autotrophs
Heterotrophs
Chemotrophs
Saprophytes
Bacteria that obtain their carbon source from carbon ioxide are called?
Chemotrophs
Autotrophs
Heterotrophs
Saprophytes
When we refer to 'growth' with bacteria, we are talking about the population and not the size of the bacteria.
False
True
Aseptic technique refers to carrying out a procedure under controlled conditions in a manner that will minimise the chance of contamination.
True
False
Microorganisms that can be found thriving in icy-cold climates would be considered...
Barophiles
Thermophiles
Mesophiles
Psychrophiles
Bibliophile
Which term best describes a bacteria that can't exist in the presence of oxygen?
Obligate aerobe
Facultative aerobe
Obligate anaerobe
Facultative anaerobe
Microaerophlile
The bacterium which obtain its energy from chemicals is known as a ...
Phototroph
Chemotroph
Autotroph
Heterotroph
The bacteria which grows best above 45°C are called...
Psychrophilic
Mesosphilic
Thermophilic
Any of these
Which of the following is the suitable temperature range for mesophiles?
20-30°C
25-40°C
>40°C
>40°C
Autotrophic bacteria are those which ...
Make their own food
Are highly susceptible to penicillin
Produce a blue-green pigment
Obtain their food from the environment
Generation time of Escherichia coli is ...
20 hours
20 days
20 minutes
20 seconds
