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This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Enzyme Technology knowledge and support exam preparation. Choose a topic below to get started.
1. |
__________ is a method which is highly used for lab scale procedures than large scale work. |
A. | Ultrasonication |
B. | Homogenization |
C. | Freezing |
D. | Alkali treatment |
Answer» B. Homogenization | |
2. |
Mortar and pestle, french press and homogenizer are widely used to lyse the cells by ultrasonication. |
A. | True |
B. | False |
Answer» C. | |
3. |
Freezing technique is not preferred unless otherwise there is a need. |
A. | True |
B. | False |
Answer» B. False | |
4. |
____________ technique is nothing but a cold or psychrophilic shock. |
A. | Ultrasonication |
B. | Homogenization |
C. | Freezing |
D. | Alkali treatment |
Answer» D. Alkali treatment | |
5. |
The technique in which the cells are subjected to cold temperature of about -15 C to -25 C is referred to as _____________ |
A. | ultrasonics |
B. | freezing |
C. | homogenization |
D. | osmotic shock |
Answer» C. homogenization | |
6. |
Homogenization performed by passing the cells at high pressure through narrow orifice which can also cause cell rupture is referred to as _______________ |
A. | ultrasonicator |
B. | freezer |
C. | mortar and pestle |
D. | french press |
Answer» B. freezer | |
7. |
A _________ has long teflon tube about 30-40 cm long which is bulged at the end and has an automated machine for providing the pressure. |
A. | ultrasonicator |
B. | homogenizer |
C. | osmotic shock |
D. | mortar and pestle |
Answer» D. mortar and pestle | |
8. |
Homogenization utilizing ____________ is one where in manual pressure is created for cell lysis. |
A. | mortar and pestle |
B. | ultrasonicator |
C. | freezer |
D. | french press |
Answer» B. ultrasonicator | |
9. |
Homogenization cannot be done by using which one of the following? |
A. | Homogenizer |
B. | Mortar and pestle |
C. | French press |
D. | Ultrasonicator |
Answer» E. | |
10. |
The procedure in which cell lysis occur because of shock waves which are formed due to collapses occurring in buffered solution containing cells is referred to as _______________ |
A. | alkali treatment |
B. | osmotic shock |
C. | ultrasonication |
D. | detergent treatment |
Answer» D. detergent treatment | |
11. |
____________ is a phenomenon of assuming frequencies more than 20 kHz which is above the human audibility. |
A. | Homogenization |
B. | Ultrasonics |
C. | Alkali treatment |
D. | Freezing |
Answer» C. Alkali treatment | |
12. |
Which of the following is not a physical method for extraction of enzymes? |
A. | Osmotic shock |
B. | Ultrasonication |
C. | Homogenization |
D. | Freezing technique |
Answer» B. Ultrasonication | |