Advertisements
Advertisements
प्रश्न
How was penicillin discovered?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Why are the fruit juices bought from market clearer as compared to those made at home?
Name the source of streptokinase. How does this bioreactor molecule function in our body?
Name the secondary metabolites in Catharanthus roseus.
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.
Most commonly used substrate for industrial production of beer is ___________.
What are A, B, C, and D in the table given below :
| Types of microbe | Name | Commercial product |
| Fungus | A | Penicillin |
| Bacterium | Acetobacter aceti |
B |
| C | Aspergillus niger | Citric acid |
| Yeast | D | Ethanol |
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 |
CO2 is not released during ________.
Write short notes on the following:
Microbial fuel cells
Which of the following microbe is used for the production of citric acid?
Match Column I (Antibiotic) with Column II (Microbial Sources) and select the correct option.
| Column I | Column II | ||
| i. | Chloromycetin | a. | Streptomyces erytreus |
| ii. | Erythromycin | b. | Streptomyces venezuelae |
| iii. | Bacitracin | c. | Streptomyces aureofaciens |
| iv. | Terramycin | d. | bacillus licheniformis |
Study the following statements and select the correct option.
i. Pseudomonas denitrificans can synthesize Vitamin B12.
ii. The microbes Neurospora gossypii and Eremothecium ashbyi produce Vitamin B2.
iii. Vitamin C can be synthesized by the microbe Rhizopus arrhizus.
The causal organism of foolish seedling disease in rice is ____________.
Dr. Alexander Fleming discovered antibiotics when he was working with the bacterium ______
Name the scientists who were credited for showing the role of Penicillin as an antibiotic?
Match the following products with their microbial sources:
| Products | Microbial Sources | ||
| (a) | Vitamin B2 | (1) | Rhizopus arrhizus |
| (b) | Fumaric acid | (2) | Candida lipolytica |
| (c) | Vitamin B12 | (3) | Trichoderma konigii |
| (d) | Lipase | (4) | Neurospora gossypii |
| (e) | Cellulase | (5) | Pseudomonas denitrificans |
| (f) | Citric Acid | (6) | Aspergillus niger |
Why are some molecules called bioactive molecules?
