Borrow et al. investigated the biosynthesis of Gibberellic acid by Gibberella fujikuroi and divided growth of organisms into balanced, storage and maintenance phase. What do you mean by storage phase?

The phase equivalent to the stationary phase

The phase equivalent to the early to middle exponential phase

The phase equivalent to the late exponential phase

The phase equivalent to the stationary phase

The phase equivalent to the lag phase

Production of primary metabolites

Production of secondary metabolites

Production of primary metabolites

Production of tertiary metabolites

Production of quaternary metabolites

The Yield factor (Y) is the measure of the efficiency of _______

Conversion of all the substrates into biomass

Conversion of anyone substrate into biomass

Conversion of all the substrates into biomass

The Affinity of an enzyme to the substrate

Number of microbes which produced the biomass

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

15 + Mcqs in Batch Culture in Technology Page 1 McqOptions

1.	The batch culture or fermentation can be used to produce ________
A.	Organic acids
B.	Amino acids
C.	Single Cell Protein
D.	Antibiotics
Answer» E.

Discussion

2.	Borrow et al. investigated the biosynthesis of Gibberellic acid by Gibberella fujikuroi and divided growth of organisms into balanced, storage and maintenance phase. What do you mean by storage phase?
A.	The phase equivalent to the early to middle exponential phase
B.	The phase equivalent to the late exponential phase
C.	The phase equivalent to the stationary phase
D.	The phase equivalent to the lag phase
Answer» C. The phase equivalent to the stationary phase

Discussion

3.	What is Idiophase?
A.	Production of secondary metabolites
B.	Production of primary metabolites
C.	Production of tertiary metabolites
D.	Production of quaternary metabolites
Answer» B. Production of primary metabolites

Discussion

4.	Which scientist(s) pointed out that the stationary phase is a misnomer in terms of the physiology of organism?
A.	Burrow et al.
B.	Bu’Lock et al.
C.	Bull
D.	Monod
Answer» D. Monod

Discussion

5.	The Yield Factor (Y) does not vary upon which of the following?
A.	pH
B.	Growth rate
C.	Temperature
D.	Amount of enzyme
Answer» E.

Discussion

6.	The Yield factor (Y) is the measure of the efficiency of _______
A.	Conversion of anyone substrate into biomass
B.	Conversion of all the substrates into biomass
C.	The Affinity of an enzyme to the substrate
D.	Number of microbes which produced the biomass
Answer» B. Conversion of all the substrates into biomass

Discussion

7.	The size of fermenters is usually large in batch fermentation.
A.	True
B.	False
Answer» B. False

Discussion

8.	Which of the following organisms represent the highest specific growth rate, µmax?
A.	Vibrio natriegens
B.	Methylomonas methanolytica
C.	Aspergillus nidulans
D.	Penicillium chrysogenum
Answer» B. Methylomonas methanolytica

Discussion

9.	Who first suggested that filamentous fungi have a ‘growth unit’ which is replicated at a constant rate?
A.	Trinci
B.	Petersen
C.	Plomley
D.	Griffiths
Answer» D. Griffiths

Discussion

10.	The following figure shows the growth of typical microbial culture in batch conditions. What is A, B, C and D?
A.	A-lag phase, B-log phase, C-stationary phase, D-deceleration
B.	A-log phase, B-lag phase, C-stationary phase, D-deceleration
C.	A-deceleration, B-log phase, C-lag phase, D-stationary
D.	A-lag phase, B-log phase, C-deceleration, D-stationary
Answer» E.

Discussion

11.	During batch fermentation, in which phase the microbes in the fermenter are adapting to the new environment?
A.	Lag phase
B.	Log or exponential phase
C.	Stationary phase
D.	Death phase
Answer» B. Log or exponential phase

Discussion

12.	The exponential phase may be described by the equation _______
A.	dx/dt = µx
B.	dt/dx = µ
C.	dx/dt = µt
D.	dx2/dt2 = µ
Answer» B. dt/dx = µ

Discussion

13.	During batch culture/fermentation, nutrients in the fermenter are utilized at a fast rate.
A.	True
B.	False
Answer» C.

Discussion

14.	A period during which the growth rate of cells gradually increases is known as _____
A.	Lag phase
B.	Log phase
C.	Stationary phase
D.	Deceleration phase
Answer» C. Stationary phase

Discussion

15.	The Batch culture is a/an ______ culture system.
A.	Open
B.	Closed
C.	Isolated
D.	Semi-closed
Answer» C. Isolated

Discussion

Explore topic-wise MCQs in Technology.

The batch culture or fermentation can be used to produce ________

Borrow et al. investigated the biosynthesis of Gibberellic acid by Gibberella fujikuroi and divided growth of organisms into balanced, storage and maintenance phase. What do you mean by storage phase?

What is Idiophase?

Which scientist(s) pointed out that the stationary phase is a misnomer in terms of the physiology of organism?

The Yield Factor (Y) does not vary upon which of the following?

The Yield factor (Y) is the measure of the efficiency of _______

The size of fermenters is usually large in batch fermentation.

Which of the following organisms represent the highest specific growth rate, µmax?

Who first suggested that filamentous fungi have a ‘growth unit’ which is replicated at a constant rate?

The following figure shows the growth of typical microbial culture in batch conditions. What is A, B, C and D?

During batch fermentation, in which phase the microbes in the fermenter are adapting to the new environment?

The exponential phase may be described by the equation _______

During batch culture/fermentation, nutrients in the fermenter are utilized at a fast rate.

A period during which the growth rate of cells gradually increases is known as _____

The Batch culture is a/an ______ culture system.