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Microbes in Human Welfare

CBSE · Class 12 · Biology

Flashcards for Microbes in Human Welfare — CBSE Class 12 Biology. Quick Q&A cards covering key concepts, definitions, and formulas.

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An infographic illustrating the different types of microbes (bacteria, fungi, viruses, protozoa, prions) with representative examples and their general characteristics or shapes.
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108 Flashcards
Card 1Introduction to beneficial microbes

Why are microbes not always harmful?

Answer

Not all microbes are harmful; several microbes are useful to humans in diverse ways. They help in making curd, bread, cheese, antibiotics, sewage treatment, biogas, biocontrol, and biofertilisers.

Card 2लाभकारी सूक्ष्मजीवों का परिचय

सूक्ष्मजीव हमेशा हानिकारक क्यों नहीं होते?

Answer

सभी सूक्ष्मजीव हानिकारक नहीं होते; कई सूक्ष्मजीव मनुष्यों के लिए अनेक तरीकों से उपयोगी होते हैं। वे दही, ब्रेड, चीज़, एंटीबायोटिक्स, सीवेज उपचार, बायोगैस, जैव-नियंत्रण, और जैव-उर्वरक बनाने में मदद करत

Card 3Microbes in household products

What are lactic acid bacteria (LAB)?

Answer

Lactobacillus and related bacteria are called lactic acid bacteria, or LAB. They grow in milk, convert it into curd, increase vitamin B12 content, and also help check disease-causing microbes in the s

Card 4घरेलू उत्पादों में सूक्ष्मजीव

लैक्टिक अम्ल बैक्टीरिया (LAB) क्या हैं?

Answer

लैक्टोबैसिलस और संबंधित बैक्टीरिया को लैक्टिक अम्ल बैक्टीरिया, या LAB, कहा जाता है। वे दूध में बढ़ते हैं, उसे दही में बदलते हैं, vitamin B12 की मात्रा बढ़ाते हैं, और पेट में रोग उत्पन्न करने वाले सूक्

Card 5Curd formation

How does milk change into curd?

Answer

LAB grow in milk and produce acids that coagulate and partially digest milk proteins. A small amount of curd added as starter contains millions of LAB, which multiply at suitable temperature and conve

Card 6दही का बनना

दूध दही में कैसे बदलता है?

Answer

LAB दूध में बढ़ते हैं और ऐसे अम्ल बनाते हैं जो दूध के प्रोटीन्स को जमाकर आंशिक रूप से पचा देते हैं। स्टार्टेर के रूप में डाली गई थोड़ी-सी दही में लाखों LAB होते हैं, जो उपयुक्त तापमान पर तेजी से बढ़ते

Card 7Curd and nutrition

Why is curd nutritionally better than milk?

Answer

Curd has increased vitamin B12 content because of LAB activity. This improves its nutritional quality.

Card 8दही और पोषण

दही पोषण की दृष्टि से दूध से बेहतर क्यों है?

Answer

LAB की गतिविधि के कारण दही में vitamin B12 की मात्रा बढ़ जाती है। इससे उसका पोषण मूल्य बेहतर हो जाता है।

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What are the important topics in Microbes in Human Welfare for CBSE Class 12 Biology?
Microbes in Human Welfare covers several key topics that are frequently asked in CBSE Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
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