Biology in Health - Microbes in Human Welfare

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Q1. Which of the following is a role of yeast in human welfare? (2020)

Solution:

Yeast, particularly Saccharomyces cerevisiae, is used in the production of alcohol through fermentation.

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Q2. Which of the following microbes is used in the production of biofuels? (2023)

Solution:

Bacteria are commonly used in the production of biofuels through fermentation processes.

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Q3. Which of the following is NOT a use of microbes in human welfare? (2023)

Solution:

Causing infections is not a beneficial use of microbes; it is a harmful effect.

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Q4. Which of the following is a disease caused by a virus? (2021)

Solution:

HIV/AIDS is caused by the Human Immunodeficiency Virus (HIV), which is a virus.

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Q5. Which microbe is primarily responsible for the fermentation of vinegar? (2021)

Solution:

Acetic acid bacteria are responsible for the fermentation process that converts alcohol into vinegar.

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Q6. 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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Q7. Which of the following is a common application of microbes in agriculture? (2019)

Solution:

Microbes are used in agriculture for pesticides, fertilizers, and enhancing soil fertility.

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Q8. Which of the following is a common use of yeast in food production? (2019)

Solution:

Yeast is commonly used in bread making due to its ability to ferment sugars and produce carbon dioxide.

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Q9. What is the role of yeast in baking? (2022)

Solution:

Yeast ferments sugars to produce carbon dioxide, which helps the dough rise in baking.

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Q10. Which of the following is a common use of microbes in agriculture? (2023)

Solution:

Microbes are used in agriculture for various purposes, including biopesticides and fertilizers.