Biology in Daily Life MCQs in Everyday Science

By: Prof. Dr. Fazal Rehman | Last updated: May 15, 2025

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1. : What is the primary function of red blood cells in the human body?



2. : Which vitamin is essential for maintaining healthy vision?



3. : What is the basic unit of life in all living organisms?



4. : Which organ is responsible for filtering waste from the blood in the human body?



5. : What type of macronutrient is primarily used by the body for energy?



6. : Which hormone regulates blood sugar levels in the human body?



7. : What is the main structural component of plant cell walls?



8. : Which process in plants converts sunlight into chemical energy?



9. : Which blood group is known as the universal donor?



10. : Which part of the brain is responsible for controlling voluntary muscle movements?



11. : What is the primary function of white blood cells?



12. : Which organ in the human body produces bile?



13. : Which type of fat is considered healthy and is found in foods like avocados and olive oil?



14. : What is the main function of hemoglobin in the blood?



15. : Which vitamin is essential for the absorption of calcium in the body?



16. : What is the primary function of the digestive system?



17. : Which enzyme is responsible for breaking down starch into sugar in the human body?



18. : What is the main purpose of the human immune system?



19. : Which vitamin is crucial for blood clotting?



20. : What is the process by which plants lose water vapor through their leaves?



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