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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
Arrange the following in the decreasing order (most important first) of their importance, for the welfare of human society. Give reasons for your answer.
Biogas, Citric acid, Penicillin and Curd
Give the biological name of the following:
The mould from which penicillin is obtained.
MOET technique is used for _____________.
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 gases produced in anaerobic sludge digesters are _______.
Define the following terms
Superbug
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 |
Which raw material is used in the fermentation processes of making beer?
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:
Which bacterium has been used as a clot buster? What is its mode of action?
Identify the enzyme ‘A’ in a given reaction.
\[\ce{Fumaric acid + H2O ->['A']Malate}\]
Which one of the following is not true about antibiotics?
Write the microbial source of following organic acid.
Citric acid
Name the microbial sources of any two enzymes.
Statement I - Toddy is made by fermenting fleshy pedicels of cashews nuts.
Statement II - Fenny is made by fermenting the sugar sap extracted from palm plants and coconut palm.
In light of above statements, select the correct answer from the option given below.
Which of the following alcoholic beverages is produced without distillation?
Which microorganism produces itaconic acid?
What is the microbial source of erythromycin?
Which microbial source yields tetracyclines?
