Factors affecting bacterial growth

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

Tags

NGSS.MS-LS1-5

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

Tags

NGSS.HS-LS4-4

Which term best describes a bacteria that can't exist in the presence of oxygen?

• Obligate aerobe

• Facultative aerobe

• Obligate anaerobe

• Facultative anaerobe

• Microaerophlile

Tags

NGSS.HS-LS2-3