Biology in Health - Microbes in Human Welfare

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Q1. What is the primary benefit of using probiotics? (2023)

Solution:

Probiotics are beneficial bacteria that help enhance gut health and improve digestion.

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Q2. Which of the following is a characteristic of pathogenic microbes? (2019)

Solution:

Pathogenic microbes are those that can cause diseases in humans, animals, or plants.

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Q3. Which of the following microbes is used in the production of antibiotics? (2020)

Solution:

Fungi, particularly the genus Penicillium, are used in the production of antibiotics like penicillin.

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Q4. Which of the following is NOT a use of microbes in agriculture? (2023)

Solution:

Water pollution is not a use of microbes; rather, microbes can help improve soil fertility and act as biopesticides.

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Q5. Which of the following is a beneficial role of microbes in human welfare? (2019)

Solution:

Microbes play a crucial role in decomposing organic matter, which helps in nutrient cycling in ecosystems.

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Q6. Which microbe is primarily responsible for the production of yogurt? (2018)

Solution:

Lactobacillus is the primary bacterium used in the fermentation of milk to produce yogurt.

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Q7. Which of the following is a role of microbes in agriculture? (2021)

Solution:

Microbes, particularly certain bacteria, play a vital role in nitrogen fixation, which is essential for plant growth.

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Q8. Which microbe is primarily responsible for the spoilage of food? (2019)

Solution:

Both bacteria and fungi can cause food spoilage through their metabolic activities.

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Q9. Which of the following microbes is commonly used in the fermentation of yogurt? (2021)

Solution:

Lactobacillus is the primary bacterium used in the fermentation process to produce yogurt.

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Q10. Which of the following is a beneficial role of bacteria in human welfare? (2019)

Solution:

Bacteria play a crucial role in decomposing organic matter, which helps in nutrient cycling.