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प्रश्न
How was penicillin discovered?
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उत्तर
Penicillin was an accidental discovery. Sir Alexander Fleming observed that in unwashed culture plates of Staphylococcus, a mould Penicillium was growing This mould inhibited the growth of Staphylococcus. Latre the antibiotic Penicillin was isolated from this fungus.
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संबंधित प्रश्न
Name the organism and enzyme which brings about the alcoholic fermentation of sucrose.
Give the microbial source of Vit. B12
Give the names and functions of enzymes involved in lactose metabolism in E. Coli.
Aspergillus niger is used to prepare vit ______.
Match the column A with B and rewrite correct pairs.
| A | B | ||
| 1. | citric acid | a) | in medicine for solubility of Ca++ |
| 2. | fumaric acid | b) | confectionary |
| 3. | gluconic acid | c) | in resins as wetting agents |
The most common substrate used in distilleries for the production of ethanol is _______.
When does antibiotic resistance develop?
Identify the organism used in the production of erythromycin.
Match Column I (Product) and Column II (Source organisms/Organisms used in production) and choose the correct option.
| Column I | Column II | ||
| i. | Vitamin C | a. | S. cerevisiae |
| ii. | Beer | b. | A. niger |
| iii. | Chloromycetin | c. | Sclerotiana libertine |
| iv. | Pectinase | d. | S. venezuelae |
In alcoholic fermentation:
Match List - I with List - II.
| List I | List II | ||
| (a) | Aspergillus niger | (i) | Acetic Acid |
| (b) | Acetobacter aceti | (ii) | Lactic Acid |
| (c) | Clostridium butylicum | (iii) | Citric Acid |
| (d) | Lactobacillus | (iv) | Butyric Acid |
Choose the correct answer from the options given below.
Match the following list of bacteria and their commercially important products:
| Bacterium | Product |
| A. Aspergillus niger | i. Lactic acid |
| B. Acetobacter aceti | ii. Butyric acid |
| C. Clostridium butylicum | iii. Acetic acid |
| D. Lactobacillus | iv. Citric acid |
Choose the correct match:
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:
Identify the enzyme ‘A’ in a given reaction.
\[\ce{Fumaric acid + H2O ->['A']Malate}\]
Gluconic acid is manufactured with the help of ______.
Write the microbial source of following organic acid.
Citric acid
Give the name of microbial source of antibiotic chloromycetin.
The common antibiotic Streptomycin is obtained from ______.
Match List I with List II -
| List-I | List-II |
| A. Clostridium butylicum | I. Ethanol |
| B. Saccharomyces cerevisiaе | II. Streptokinase |
| C. Trichoderma polysporum | III. Butyric acid |
| D. Streptococcus sp. | IV. Cyclosporin-A |
Choose the correct answer from the options given below:
