Fun Biology Quiz with Detailed ResultsBy onlinetoolkit / 1 October 2025 1. What is the basic structural unit of all living organisms? Organ Cell Tissue Molecule 2. Which process do plants use to convert sunlight into energy? Photosynthesis Respiration Fermentation Transpiration 3. What molecule carries genetic information in most living organisms? RNA DNA Protein Lipid 4. Which organ in the human body is primarily responsible for pumping blood? Brain Lungs Heart Liver 5. What is the name of the process by which cells divide to produce two identical daughter cells? Meiosis Mitosis Fertilization Mutation 6. Which group of organisms is known for having cell walls made of chitin? Plants Fungi Bacteria Protists 7. What is the term for the maintenance of a stable internal environment in living organisms? Metabolism Homeostasis Adaptation Evolution 8. Which blood cells help defend the body against infections? Red blood cells Platelets White blood cells Plasma cells 9. Which of the following is NOT a part of the human digestive system? Stomach Kidney Small intestine Esophagus 10. What term describes the evolutionary process by which species better adapted to their environment survive and reproduce? Natural selection Genetic drift Mutation Speciation Submit Answers
