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Biochemical Engineering - Fermentation Reactors

Exercise : Fermentation Reactors - Section 2
21.
Which of the following is best described as secondary metabolite?
Acetic acid produced from the oxidation of ethanol
Ethanol from the fermentation of glucose
Penicillin
Citric acid from the partial oxidation of glucose
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
A microorganism which is subjected to the Crabtree effect is most likely to
ferment in the presence of low concentrations of sugar and dissolved oxygen
respire in the presence of low sugar and high dissolved oxygen concentrations
ferment in the presence of high concentrations of sugar and dissolved oxygen
respire in the presence of high sugar and low dissolved oxygen concentrations
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
When the product formation is approximately equal to the rate of cell growth, the pattern of product formation is termed as
uncoupled
growth associated
non-growth associated
metabolically uncoupled
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
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?
X,S and P will be zero
X,S and P can not be predicted for the above condition
X and P will be zero while S is equal to the substrate concentration in feed
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Pseudomonas aeruginosa has a maximum specific growth rate of 0.8 h-1 in a medium with glucose as a growth limiting substrate. To prevent wash out, the dilution rate must be set to
greater than 0.8 h-1
less than 0.8 h-1
equal to 0.8 h-1
1.6 h-1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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