Environmental control of metabolism Flashcards
1
Q
Why are microorganisms used
A
They are adaptable, grow quickly and are exult cultivated.
2
Q
Raw material required for culturing micro organisms
A
Fatty acids
Amino acids
Vitamins
3
Q
Why are sterile conditions important
A
Kills any other organisms to reduce competition for nutrients and also to reduce the risk of spoiling the product.
4
Q
What’s happens in the lag phase
A
Enzymes are induced to metabolise substrates
5
Q
What happens in the log phase
A
The most rapid growth of micro organisms due to plentiful nutrients
6
Q
What happens in the stationary phase
A
Nutrients become depleted and the production of toxic metabolites and secondary metabolites produced
7
Q
What happens in the death phase
A
Toxic accumulation of metabolites or the lack of nutrients in the culture.
