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‣
Biochemical Engineering
‣
Enzymes and Kinetics
Comments
Question
Michaelis Menten equation can also be written as
Options
A. (-C
s
)/r = (C
s
/r
max
)+(K
m
/r
max
)
B. 1/r = (1/r
max
)+(K
m
/(r
max
.C
s
))
C. r = r
max
-(K
m
.r/C
s
)
D. All of these
Correct Answer
All of these
Enzymes and Kinetics problems
Search Results
1. Lock and key theory is based on the compatibility of
Options
A. enzyme and substrate
B. enzyme and product
C. enzyme and enzyme substrate complex
D. enzyme substrate complex and product
Show Answer
Scratch Pad
Discuss
Correct Answer: enzyme and substrate
2. Classical noncompetitive inhibition is obtained only under
Options
A. slow equilibrium conditions
B. moderate equilibrium conditions
C. rapid equilibrium conditions
D. non-equilibrium conditions
Show Answer
Scratch Pad
Discuss
Correct Answer: rapid equilibrium conditions
3. Enzymes are basically
Options
A. proteins
B. vitamins
C. fat
D. carbohydrates
Show Answer
Scratch Pad
Discuss
Correct Answer: proteins
4. The active site of an enzyme differs from an antibody-antigen binding site in that the enzyme active site
Options
A. contains modified amino acids
B. catalyzes a chemical reaction
C. is complementary to a specific ligand
D. contains amino acids without side chains
Show Answer
Scratch Pad
Discuss
Correct Answer: catalyzes a chemical reaction
5. The initial velocity, V
0
, of an enzyme catalyzed reaction reaches V
max
as
Options
A. [S] = K
M
B. [S] = 10 * K
M
C. 1/[S] = 1/K
M
D. 1/[S] ? 0
Show Answer
Scratch Pad
Discuss
Correct Answer: 1/[S] ? 0
6. The rate equation in competitive inhibition based on Michaelis Menten equation is given by
Options
A. r
max
S
/(
K
m
(1+I/
K
i
)+
S
))
B. r
max
E
/(
K
m
(1+I/
K
i
)+
S
))
C. r
max
I
/(
K
m
(1+I/
K
i
)+
S
))
D. r
max
S
/(
K
m
(1+I/
K
i
))
Show Answer
Scratch Pad
Discuss
Correct Answer: r
max
S
/(
K
m
(1+I/
K
i
)+
S
))
7. Lag phase occurs mainly due to
Options
A. acclimatization with new environment and substrate
B. higher growth temperature
C. substrate disliking
D. variation in substrate concentration
Show Answer
Scratch Pad
Discuss
Correct Answer: acclimatization with new environment and substrate
8. The relatively large volume (10 to 40% of total fermenter volume) of the seed culture is employed to
Options
A. increase the overall fermentation time
B. increase the overall yield of biomass
C. decrease the overall fermentation time
D. decrease the overall yield of product
Show Answer
Scratch Pad
Discuss
Correct Answer: decrease the overall fermentation time
9. In an airlift bioreactor, the air sparging region is called
Options
A. downcomer
B. disengagement zone
C. air riser
D. none of these
Show Answer
Scratch Pad
Discuss
Correct Answer: air riser
10. Residence time distribution (RTD) of a reactor is independent of
Options
A. micro mixing
B. volume of reactor
C. height of the reactor
D. width of the reactor
Show Answer
Scratch Pad
Discuss
Correct Answer: micro mixing
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