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प्रश्न
Why are the fruit juices bought from market clearer as compared to those made at home?
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उत्तर
The fruit juices bought from the market are clearer because they are clarified using enzymes like pectinases and proteases, which break down substances that make homemade juices cloudy.
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
The microbial source of vinegar is ______.
Erythromycin is obtained from ______.
Answer the following question based on Meselson and Stahl's experiment on E. coli :
Write the name of the chemical substance used as the only source of nitrogen in the experiment.
Antibiotic Chloromycetin is obtained from ______.
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 _______.
From the following identify the WRONG statements.
i. All enzymes are composed of proteins.
ii. All proteins are enzymes.
iii. Some hormones are proteins.
iv. Some nucleic acid also acts as enzymes.
v. All enzymes are inorganic in nature.
vi. Enzymes are biocatalysts.
Which of the following statement is INCORRECT?
Which of the following microbe is used for producing Vitamin B12 on industrial scale?
Match the following product in column - I with their ource in column - II. Select the correct option.
| Column - I | Column - II | ||
| (a) | Gluconic acid | (i) | Trichoderma koenigii |
| (b) | Vitamin B12 | (ii) | Streptomyces erythreus |
| (c) | Erythromycin | (iii) | Pseudomonas denitrificans |
| (d) | Cellulase | (iv) | Aspergillus niger |
Which raw material is used in the fermentation processes of making beer?
Which one of the following alcoholic drinks is produced without distillation?
What are fermentors?
Give any two microbes that are useful in biotechnology.
Match the antibiotics in column I with their microbial sources in column II:
| Column I | Column II |
| (a) Chloromycetin | (1) Streptomyces griseus |
| (b) Erythromycin | (2) Streptomyces aurifaciens |
| (c) Streptomycin | (3) Streptomyces venezuelae |
| (d) Terramycin | (4) Streptomyces erythreus |
State the most important contribution of the following microbes for human welfare:
Monascus purpureus
What are A, B and C in the table given below?
| Sr. No. | Microbes type | Name | Commercial product |
| 1. | Fungus | A | Penicillin |
| 2. | B | Aspergillus niger | Citric acid |
| 3. | Bacterium | Bacterium licheniformis | C |
