31. Which one of the following options related to the following statements is incorrect?
In comparison to physical/chemical methods of clean up, bioremediation methods
In comparison to physical/chemical methods of clean up, bioremediation methods
32. Match the following products with their starting substrates.
Group I
Group II
P. Sake
1. Apple juice
Q. Cider
2. Grape juice
c. Wine
3. Barley
d. Lager
4. Rice
| Group I | Group II |
| P. Sake | 1. Apple juice |
| Q. Cider | 2. Grape juice |
| c. Wine | 3. Barley |
| d. Lager | 4. Rice |
33. A bacterial culture (200 μL containing 1.8 × 109 cells) was treated with an antibiotic Z (50 μg per mL) for 4 h at 37°C. After this treatment, the culture was divided into two equal aliquots.
Set A: 100 μL was plated on Luria agar.
Set B: 100 μL was centrifuged, the cell pellet washed and plated on Luria agar.
After incubating these two plates for 24 h at 37°C, Set A plate showed no colonies, whereas the Set B plate showed 0.9 × 109 cells. This experiment showed that the antibiotic Z is
Set A: 100 μL was plated on Luria agar.
Set B: 100 μL was centrifuged, the cell pellet washed and plated on Luria agar.
After incubating these two plates for 24 h at 37°C, Set A plate showed no colonies, whereas the Set B plate showed 0.9 × 109 cells. This experiment showed that the antibiotic Z is