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Video Microbes in Human Welfare Video Lecture - Biology Class 12 - NEET
FAQs on Video: Microbes in Human Welfare
| 1. What role do microbes play in human welfare? |  |
Ans. Microbes play a crucial role in human welfare by aiding in various processes such as digestion, nutrient cycling, and the production of food and beverages. They are instrumental in fermentation, which is used in making products like yogurt, cheese, and bread. Additionally, certain microbes contribute to waste management and environmental sustainability by breaking down organic matter.
| 2. How do microbes contribute to agriculture? | |
Ans. Microbes contribute to agriculture by enhancing soil fertility and plant health. Nitrogen-fixing bacteria, for example, convert atmospheric nitrogen into forms usable by plants, improving crop yields. Mycorrhizal fungi form symbiotic relationships with plant roots, aiding in nutrient absorption. Moreover, some microbes can act as biocontrol agents, helping to reduce pest populations naturally.
| 3. What is the significance of fermentation in food production? | |
Ans. Fermentation is significant in food production as it not only preserves food but also enhances its flavour and nutritional value. During fermentation, microbes like yeast and bacteria convert sugars into alcohol or organic acids, which can inhibit the growth of spoilage organisms. This process is used in the production of various foods, including pickles, sauerkraut, and alcoholic beverages.
| 4. How do microbes impact human health? | |
Ans. Microbes impact human health both positively and negatively. Beneficial microbes, such as probiotics, help maintain a healthy gut microbiome, aiding digestion and boosting the immune system. Conversely, pathogenic microbes can cause diseases and infections. Understanding the balance of these microorganisms is crucial for promoting health and preventing illness.
| 5. What are some examples of beneficial microbes used in biotechnology? | |
Ans. Some examples of beneficial microbes used in biotechnology include Lactobacillus species in dairy fermentation, Bacillus thuringiensis as a biopesticide, and Escherichia coli in genetic engineering. These microbes are utilised for their specific properties, such as producing enzymes, antibiotics, and other valuable substances that enhance industrial processes and improve health outcomes.
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Apr 14, 2026 Last updated
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