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Biotechnology - Ethanol Production

@ : Home > Biotechnology > Ethanol Production > Section 1

Exercise

  • Section 1
"The secret to creativity is knowing how to hide your sources."
- Albert Einstein
1. 

If starch containing substrates are used for ethanol production, yeast strain can't be used directly because
A. it doesn't contain amylases to hydrolyze starch
B. starch is not a suitable substrate for the production of ethanol
C. it is converted to pentose sugar
D. none of the above
2. 

Which of the following is used to check vortex and to improve aeration efficiency in a fermentor?
A. Impeller
B. Baffles
C. Sparger
D. All of these
3. 

What are different substrates used for ethanol production?
A. Starch containing substrate
B. Juices from sugarcane or molasses or sugar beet
C. Waste product from wood or processed wood
D. All of the above
4. 

Which of the following is used for aeration in a fermentor?
A. Impeller
B. Baffles
C. Sparger
D. All of these
5. 

Ethanol is produced by
A. continuous fermentation
B. batch fermentation
C. both (a) and (b)
D. none of these

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