WorksheetsBioprocess Technology
Total questions: 25
Worksheet time: 13mins
Downstream process includes
Fermentation Media Selection
Strain Selection
Cell separation
Product recovery
Why the fermentation media selection is an important aspect for industrial production purpose?
to ensure strain improvement
Low cost product delivery
Improve in downstream section
All of the above
Propagation media is used in
Fermentor
Starter Culture
Seed tank
All of these
Primary recovery depends upon " intracellular or extra cellular product formation"
true
false
Yeast feeds on this element in order to give off CO2 gas.
sugar
vinegar
salt
Fermentation leads to the improvement of _____________ in the final product
Taste
Quantity
pH
Amino acids
Aspergillus spp. breaks down the protein into ____________
Carbohydrates
Sugar
Amino acid
Lipids
Q.1: Screening of microorganisms includes .
Done in one or few steps
Allow discarding of many valueless microbes
Easy detection of the small percentage of useful microorganism
All of the above
Primary screening of organic acids or amines producing organisms is done by
Crowded plate technique
Dye such as neutral red or bromothymol blue is used
Enrichment culture Technique
Auxanographic method
Antibiotic producing microorganisms can be detected by the method
Incorporation of CaCO3 in the agar medium
Crowded plate method
Indicator Dye Method
None of the above
Secondary screening can give information about ...........
The genetic instability in microbial cultures
Number of products produced in a single fermentation
The structure of product
All of the above
Yeast is activated by what element?
warmth
cold
fire
Bioreactor is also known as
Fermentor
Vessel
Fermentation
What are the enzymes are used in microbial enzyme
Protease
Lipase
Both (a) and (b)
None of the above
Bioreactor are used as
High level of pH
Low level of pH
Temperature control
Both a and b
Example of Primary metabolites
Lactic acid
Ethanol
Both a and b
None of the above
Fermenter allow the production of material in
small amount
fixed amount
bulk amount
variable amount
What is the basic function of the fermenter?
To sterilize the medium
To recover the product
To purify the product
To provide optimum growth conditions to organisms and obtain the desired product
Which of the following material is preferable for the construction of small-scale fermenter?
Quartz
Glass
Iron steel
Wood
The Batch culture is a/an ______ culture system.
Open
Closed
Isolated
Semi-closed
A period during which the growth rate of cells gradually increases is known as _____
Lag phase
Log phase
Stationary phase
Deceleration phase
The Yield Factor (Y) does not vary upon which of the following?
pH
Growth rate
Temperature
Amount of enzyme
The batch culture or fermentation can be used to produce ________
Organic acids
Amino acids
Single Cell Protein
Antibiotics
The following figure shows the growth of typical microbial culture in batch conditions. What is A, B, C and D?
A-lag phase, B-log phase, C-stationary phase, D-deceleration
A-log phase, B-lag phase, C-stationary phase, D-deceleration
A-deceleration, B-log phase, C-lag phase, D-stationary
A-lag phase, B-log phase, C-deceleration, D-stationary
