NMEICT-MHRD (Govt. of India) Project on - Creation of e-Contents on Fermentation Technology
Module-4: Batch Culture Fermentation processes
Multiple Choice Questions
Q.1: Microbial population maintained in ________ phase for long time using continuous
culture system.
A.
B.
C.
D.
lag
Log
Exponential
Death
Q.2: A chemostat is also known as ________
A.
B.
C.
D.
Bactogen
Bacteriogen
Bacterial filter
Bacteriogen vessel
Q.3: Cell density in _________ is controlled by increasing and decreasing flow of culture
medium.
A.
B.
C.
D.
Chemostat
Turbidostat
Continuous culture
Synchronous culture
Q.4: A _____________ is composed of population of cell that at the same stage of their cell
cycle
A.
B.
C.
D.
Chemostat
Turbidostat
Continuous
Synchronous culture
Q.5: What is an enrichment culture?
A.
B.
C.
D.
Something that provides growth for all microorganisms
Something that inhibits growth for all microorganisms
An infectious culture
Something that provides growth for a certain microorganism but not for others
Q.6: Which microorganisms require oxygen?
A.
B.
C.
D.
Obligate aerobes
Facultative anaerobes
Obligate anaerobes
Free radicals
Project control No: RE-02091011297, Christ College, Rajkot, Gujarat, India
NMEICT-MHRD (Govt. of India) Project on - Creation of e-Contents on Fermentation Technology
Q.7: ……….. Process in that it allows enrichment and concentration in one step, by reducing
the volume of material for further processing.
A.
B.
C.
D.
Filtration
Precipitation
Diffusion
All the Above
Q.8: Chilled……… and ………. can be used in the precipitation of proteins mainly due to
changes in the dielectric property of solution.
A.
B.
C.
D.
Ethanol, Ethane
Acetone, Ketone
Glycol, Glycerol
Ethanol, Acetone
Q.9: ……… Process used at all scales of operation to separate suspended particles from a
liquid or gas, using a porous medium which retains the particles but allows the liquid and
gas to pass.
A.
B.
C.
D.
Filtration
Precipitation
Diffusion
Adhesion
Q.10: ………… type of filter is suitable for “polishing” large volumes of liquid with low
solid content or small batch filtrations of valuable solids.
A.
B.
C.
D.
Frame filter
Pressure leaf filter
Diffusion filter
Cross flow filter
Project control No: RE-02091011297, Christ College, Rajkot, Gujarat, India