Biology Trivia Questions and Answers

Biology is the study of life and all living organisms, from the smallest microorganisms to complex ecosystems. It encompasses various fascinating topics, including genetics, anatomy, evolution, and ecology.

So, get ready to explore the depths of biology and uncover some fascinating facts with out biology trivia questions and answers quiz!

For more quizzes, see our trivia quiz sitemap.

Section 1: Cell Biology

1. What is the basic structural and functional unit of life?
   Answer: The cell.
2. Which organelle is known as the "powerhouse" of the cell?
   Answer: The mitochondria.
3. What is the process by which cells break down glucose to produce energy?
   Answer: Cellular respiration.
4. What is the process by which cells convert light energy into chemical energy?
   Answer: Photosynthesis.
5. What is the genetic material found within the nucleus of a cell?
   Answer: DNA.

Section 2: Genetics and Heredity

6. Who is considered the "father of genetics"?
   Answer: Gregor Mendel.
7. What is the term for the physical appearance of an organism determined by its genes?
   Answer: Phenotype.
8. What is the term for the specific location of a gene on a chromosome?
   Answer: Locus.
9. What is the name given to the different forms of a gene?
   Answer: Alleles.
10. What is the process by which genetic information is passed from parent to offspring?
    Answer: Heredity.

Section 3: Anatomy and Physiology

11. What is the largest organ in the human body?
    Answer: The skin.
12. What is the name of the muscle that allows us to breathe?
    Answer: The diaphragm.
13. Which organ filters waste products from the blood and produces urine?
    Answer: The kidneys.
14. What is the main function of the cerebellum in the brain?
    Answer: It coordinates movement and balance.
15. Which part of the eye controls the amount of light entering the eye?
    Answer: The iris.

Section 4: Evolution and Natural Selection

16. Who proposed the theory of natural selection?
    Answer: Charles Darwin.
17. What is the process by which species gradually change over time?
    Answer: Evolution.
18. What is the term for structures that have a similar form but different functions?
    Answer: Homologous structures.
19. Which scientist coined the term "survival of the fittest"?
    Answer: Herbert Spencer.
20. What is the name of the ship on which Charles Darwin sailed to study different species?
    Answer: HMS Beagle.

Section 5: Ecology and Ecosystems

21. What is the study of the interaction between organisms and their environment?
    Answer: Ecology.
22. What is the term for a group of organisms of the same species living in the same area?
    Answer: Population.
23. What is the ultimate source of energy for most ecosystems?
    Answer: The sun.
24. What is the term for a community of organisms and their physical environment?
    Answer: Ecosystem.
25. What is the process by which plants convert carbon dioxide into oxygen?
    Answer: Photosynthesis.

Section 6: Classification and Taxonomy

26. What is the science of naming, classifying, and organizing living organisms?
    Answer: Taxonomy.
27. What are the three domains of life?
    Answer: Bacteria, Archaea, and Eukarya.
28. What is the highest taxonomic rank in the Linnaean classification system?
    Answer: Kingdom.
29. Which scientist developed the binomial nomenclature system for naming species?
    Answer: Carl Linnaeus.
30. What is the largest category in the classification system?
    Answer: Domain.

Section 7: Microbiology

31. What are organisms that can only be seen with a microscope called?
    Answer: Microorganisms.
32. What is the term for a disease-causing microorganism?
    Answer: Pathogen.
33. What is the shape of bacteria that are spiral or corkscrew in form?
    Answer: Spirilla.
34. What is the term for the study of viruses?
    Answer: Virology.
35. What is the process by which bacteria reproduce asexually?
    Answer: Binary fission.

Section 8: Plant Biology

36. What is the process by which plants convert sunlight into chemical energy?
    Answer: Photosynthesis.
37. What is the male reproductive part of a flower called?
    Answer: The stamen.
38. What is the female reproductive part of a flower called?
    Answer: The pistil.
39. Which part of a plant absorbs water and nutrients from the soil?
    Answer: The roots.
40. What is the protective outer layer of a plant cell called?
    Answer: The cell wall.

Section 9: Physiology and Behavior

41. What is the hormone responsible for regulating blood sugar levels?
    Answer: Insulin.
42. What is the process by which an organism maintains a stable internal environment?
    Answer: Homeostasis.
43. What is the name of the hormone that regulates sleep-wake cycles?
    Answer: Melatonin.
44. Which part of the brain is responsible for memory and learning?
    Answer: The hippocampus.
45. What is the term for an involuntary response to a stimulus?
    Answer: Reflex.

Section 10: Marine Biology

46. What is the largest animal on Earth?
    Answer: The blue whale.
47. What is the largest coral reef system in the world?
    Answer: The Great Barrier Reef.
48. What is the process by which marine organisms convert sunlight into energy?
    Answer: Photosynthesis.
49. What is the process by which marine organisms convert food into energy?
    Answer: Respiration.
50. What is the name of the symbiotic relationship between coral and algae?
    Answer: Coral bleaching.

Conclusion on Biology Trivia

From the microscopic world of cells to the vast ecosystems of our planet, biology offers a profound understanding of the intricate workings of life. Whether you are a biology enthusiast or simply curious about the natural world, these trivia questions have provided a glimpse into the wonders of the living organisms that surround us.