Exercise: Fermentation Reactors

Questions for: Fermentation Reactors

Which of the following would be correct concerning the concentration of biomass (X). growth limiting substrate (S) and product (P) in a chemostat when the cells have been washed out?
A:
X,S and P will be zero
B:
X,S and P can not be predicted for the above condition
C:
X and P will be zero while S is equal to the substrate concentration in feed
D:
None of the above
Answer: C
No answer description is available. Let's discuss.
📖
📝
💬
👁️
When the product formation is approximately equal to the rate of cell growth, the pattern of product formation is termed as
A:
uncoupled
B:
growth associated
C:
non-growth associated
D:
metabolically uncoupled
Answer: B
No answer description is available. Let's discuss.
📖
📝
💬
👁️
A microorganism which is subjected to the Crabtree effect is most likely to
A:
ferment in the presence of low concentrations of sugar and dissolved oxygen
B:
respire in the presence of low sugar and high dissolved oxygen concentrations
C:
ferment in the presence of high concentrations of sugar and dissolved oxygen
D:
respire in the presence of high sugar and low dissolved oxygen concentrations
Answer: C
No answer description is available. Let's discuss.
📖
📝
💬
👁️
Which of the following is best described as secondary metabolite?
A:
Acetic acid produced from the oxidation of ethanol
B:
Ethanol from the fermentation of glucose
C:
Penicillin
D:
Citric acid from the partial oxidation of glucose
Answer: C
No answer description is available. Let's discuss.
📖
📝
💬
👁️
The toxicity of organic acids to cells
A:
enhances as the pH falls
B:
reduces as the pH falls
C:
is not affected by pH
D:
is highest at pH 7.0
Answer: A
No answer description is available. Let's discuss.
📖
📝
💬
👁️
Ad Slot (Above Pagination)
Quiz