Grade 12 Science Assessment Instructions: Answer each question carefully. Write your answer in the space provided.Please enable JavaScript in your browser to complete this form.Please enable JavaScript in your browser to complete this form.Name *FirstLastGrade *Contact Number *Phone number or WhatsApp number1. What is the difference between an endothermic and an exothermic reaction? Provide an example of each.2. Explain the significance of the double helix structure of DNA.3. What is the principle of natural selection, and how does it contribute to evolution?4. Describe the process of protein synthesis, including transcription and translation.5. What are the four fundamental forces of nature? Briefly describe each.6. Define isotopes and provide an example of how they are used in medicine.7. What is the difference between a covalent bond and a polar covalent bond? the including affects 8. Explain the concept of homeostasis and give an example in human physiology.9. What is the role of mitochondria in cellular respiration?10. Describe the process of photosynthesis, including its overall equation and significance to life on Earth.11. What is the function of the ribosome in a cell?12. Explain what a gene is and how it differs from an allele.13. What are stem cells, and what potential do they hold for medical research?14. Define ecological succession and differentiate between primary and secondary succession.15. What is the significance of the Hardy-Weinberg principle in population genetics?16. Describe how enzymes function as biological catalysts, including factors that affect their activity.17. What is cellular differentiation, and why is it important for multicellular organisms?18. Explain the greenhouse effect and its impact on global climate change.19. What are neurotransmitters, and how do they function in the nervous system?20. Define biodiversity and explain its importance to ecosystem stability and resilience.21. What is genetic engineering, and what are some ethical considerations associated with it?22. Describe the structure and function of the plasma membrane in cells.23. What is osmosis, and how does it differ from diffusion?24. Explain how climate change affects biodiversity in ecosystems worldwide.25. What are the main stages of cellular respiration, and what occurs during each stage?26. Describe the role of chloroplasts in photosynthesis and their importance to life on Earth.27. What is the significance of genetic variation within a population?28. Explain the process of meiosis and its importance in sexual reproduction.29. What are some common methods used to measure biodiversity in an ecosystem?30. Discuss the role of scientific research in addressing global health challenges, such as pandemics or antibiotic resistance.Assess My Answers
