Biology Quiz

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1. What is the basic unit of life?
Ans. Cell

2. Which gas do plants absorb during photosynthesis?
Ans. Carbon dioxide (CO2)

3. What is the powerhouse of the cell?
Ans. Mitochondria

4. Name the process by which cells divide into two identical daughter cells.
Ans. Mitosis

5. What is the largest organ in the human body?
Ans. Skin

6. Which gas do humans primarily exhale during respiration?
Ans. Carbon dioxide (CO2)

7. Name the process by which green plants make their own food.
Ans. Photosynthesis

8. Which molecule stores genetic information in cells?
Ans. DNA (Deoxyribonucleic acid)

9. What is the role of enzymes in biological reactions?
Ans. Facilitate chemical reactions

10. Which part of the flower produces seeds?
Ans. Ovary

11. What is the purpose of mitosis in cell division?
Ans. Cell growth and repair

12. Name the three types of blood vessels in the human circulatory system.
Ans. Arteries, veins, capillaries

13. What is the function of the nervous system in the body?
Ans. Transmitting signals and coordinating bodily functions

14. Which gas is responsible for the greenhouse effect on Earth?
Ans. Carbon dioxide (CO2)

15. What is the role of antibodies in the immune system?
Ans. Fight against pathogens and foreign substances

16. What is the function of the ribosomes in a cell?
Ans. Protein synthesis

17. Which organelle is known as the "powerhouse" of the cell?
Ans. Mitochondria

18. What is the main function of white blood cells in the immune system?
Ans. Defending against infections and diseases

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