Q. No.
Match each item in Column I with one item in Column II and chose your answer from the codes given below.
|
Column I (antibiotic) |
Column II (effect) |
|
I. Tetracycline II. Streptomycin III. Chloramphenicol IV. Erythromycin |
1. inhibits binding of aminoacyl tRNA to the ribosome 2 inhibits initiation of translation 3. inhibits peptidyl transferase 4. inhibits translocation of mRNA along the ribosome |
Codes:
| I | II | III | IV | |
| 1. | 1 | 2 | 3 | 4 |
| 2. | 2 | 1 | 4 | 3 |
| 3. | 2 | 1 | 3 | 4 |
| 4. | 1 | 2 | 4 | 3 |
Match each item in Column I with one item in Column II and chose your answer from the codes given below.
|
Column I |
Column II |
|
I. Aspergillus niger II. Streptococcus III. Trichoderma IV. Monascus purpureuss |
1. Clot buster 2. Citric acid 3. Cyclosporin A 4. Statins |
Codes:
| I | II | III | IV | |
| 1. | 1 | 2 | 3 | 4 |
| 2. | 2 | 1 | 4 | 3 |
| 3. | 2 | 1 | 3 | 4 |
| 4. | 1 | 2 | 4 | 3 |
Match the following list of bioactive substances and their roles:
| Bioactive | Substance Role | ||
| A. | Statin | i. | Removal of oil stains |
| B. | Cyclosporin A | ii. | Removal of clots from blood vessels |
| C. | Streptokinase | iii. | Lowering of blood cholesterol |
| D. | Lipase | iv. | Immuno-suppressive agent |
Choose the correct match:
| 1. | A-ii, B-iii, C-i, D-iv | 2. | A-iv, B-ii, C-i, D-iii |
| 3. | A-iv, B-i, C-ii, D-iii | 4. | A-iii, B-iv, C-ii, D-i |
The large holes in ‘Swiss Cheese’ are due to the production of a large amount of carbon dioxide by:
1. Propionibacterium shermanii
2. Methylophilus methylotrophus
3. Penicillium roqueforti
4. Penicillium camemberti
A biological control being developed for use in the treatment of plant diseases is the fungus:
| 1. | Trichoderma | 2. | Pneumocystis |
| 3. | Claviceps | 4. | Epidermophyton |
Consider the two statements:
| I: | Indirectly, BOD is a measure of the organic matter present in the water. |
| II: | The greater the BOD of wastewater, the more its polluting potential. |
1. Both I and II are correct
2. Only I is correct
3. Only II is correct
4. Both I and II are incorrect
What is true regarding the activated sludge generated during the secondary treatment of sewage water?
| I: | It is made up of aerobic bacteria that sediment down |
| II: | A large part of the activated sludge is pumped back into the aeration tank to serve as the inoculum. |
| III: | A minor part of the sludge is pumped into large tanks called anaerobic sludge digesters. |
| 1. | Only I | 2. | Only II and III |
| 3. | Only I and III | 4. | I, II and III |
What is incorrect regarding organic farming?
| 1. | It relies on controlling pests by natural predation rather than introduced chemicals. |
| 2. | A key belief of the organic farmer is that biodiversity furthers health. |
| 3. | Pests are totally eradicated. |
| 4. | Reduces dependence on toxic chemicals and pesticides. |
Arbuscular mycorrhizas are formed only by fungi in the division:
| 1. | Ascomycota | 2. | Glomeromycota |
| 3. | Basidiomycota | 4. | Microsporidia |
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