LETTER AND SYMBOL SERIES QUIZ

The Zygomonas has a merit over yeast because

it has more specific growth rate

All of these

it has high tolerance to ethanol

it has more osmotic tolerance to higher sugar concentration

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following microorganisms help in the ethanol production?

All of these

Zygomonas mobilis

Saccharomyces cerevisiae

Saccharomyces uvarum

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is used for aeration in a fermentor?

Sparger

Impeller

Baffles

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Yeast is used in the production of

cheese

curd

ethyl alcohol

acetic acid

TRUE ANSWER : ?
YOUR ANSWER : ?

How is air supply to the fermentor sterilized?

By heat filtration

All of these

Filtration through granular material

Filtration through fibrous material

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is used for agitation in a fermentor?

Baffles

Impeller

All of these

Sparger

TRUE ANSWER : ?
YOUR ANSWER : ?

If starch containing substrates are used for ethanol production, yeast strain can't be used directly because

it doesn't contain amylases to hydrolyze starch

it is converted to pentose sugar

starch is not a suitable substrate for the production of ethanol

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

To maintain aseptic conditions during fermentation which of the following is needed?

All of these

Sterilization of air supply

Aeration and agitation

Sterilization of fermentor

TRUE ANSWER : ?
YOUR ANSWER : ?

S cerevisiae start producing ethanol with in

15 h

24 h

12 h

10 h

TRUE ANSWER : ?
YOUR ANSWER : ?

The fermentor can be sterilized by

steam under pressure

keeping it in the oven

boiling

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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