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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
Aspergillus niger is used to prepare vit ______.
What is the main function of a fermenter?
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 |
Cyclosporin - A is an immunosuppressive drug produced from ____________.
Define the following terms
Superbug
Identify the organism used in production of alcohol.
Which of the following are produced without distillation?
Identify the diagram given below.
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 |
Identify the equipment which is essentially required for growing microbes on a large scale, for industrial production of enzymes.
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:
How do bioactive molecules of fungal origin help in restoring good health of humans?
What roles do enzymes play in detergents that we use for washing clothes? Are these enzymes produced from some unique microorganisms?
What is a broad spectrum antibiotic? Name one such antibiotic.
Name the drug a patient who has undergone a successful organ transplant, has to take all his/her life.
Match the following pairs:
| Column A | Column B | ||
| Antibiotic produced | Microbial source | ||
| (i) | Penicillin | (a) | Streptomyces venezuelae |
| (ii) | Chloromycetin | (b) | Bacillus licheniformis |
| (iii) | Bacitracin | (c) | Streptomyces aurifaciens |
| (iv) | Erythromycin | (d) | Streptomyces griseus |
| (v) | Streptomycin | (e) | Penicillium chrysogenum |
| (vi) | Terramycin | (f) | Streptomyces erythreus |
Given below are the list of the commercially important products and their source organisms. Select the option that gives the correct matches.
| List A | List B | ||
| S. No. | Bioactive Products | S. No. |
Microbes (Source Organism) |
| (A) | Cyclosporin - A | (i) | Streptococcus |
| (B) | Statins | (ii) | Trichoderma polysporum |
| (C) | Streptokinase | (iii) | Penicillium notatum |
| (D) | Penicillin | (iv) | Monascus purpureus |
Write the microbial source of following organic acid.
Citric acid
Write the microbial source of following organic acid:
Acetic acid
