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WorksheetsMIC542_CHAPTER_2
Total questions: 10
Worksheet time: 6mins
The following are macronutrients, except:
manganase
carbon
oxygen
nickel
The following are growth factors, except:
purines
nitrogen
amino acids
vitamins
Lag phase occurs if_______
cell are damaged
old cultures used as inoculum
cells are transferred from rich medium to poor medium
active cells are inoculated into the same fresh culture medium
Secondary metabolites can be produced by bacteria during _______
lag phase
stationary phase
log phase
death phase
The following are examples of primary metabolites, except:
enzymes
antibiotics
carbohydrates
lipids
Choose the correct statement of continuous culture.
spent medium is continuously removed at the same rate.
microbial cells are removed with the spent medium.
fresh nutrient is continuously added.
culture in an enclosed vessel
What is the function of paddle in the chemostat system?
to mix the mixture well (nutrient & bacterial cells)
to control temperature
to control aeration
act as cooling agent
Determine crucial factors in controlling the growth rate of a continuous culture:
fresh nutrient
dilution rate
concentration of a limiting nutrient
flow rate
In which phase, the cell growing at maximum rate?
lag
log
stationary
death
During the exponential phase, the bacterial growth rate is influenced by various factors such as
temperature
concentration of nutrient
pH
agitation/aeration
