The exam paper addresses key topics in biology, including ecosystems, human physiology, genetic inheritance, and cellular processes. It explores biodiversity, food chains, energy transfer, photosynthesis, and genetic crosses. Human physiology questions focus on the endocrine system, homeostasis, and the impacts of external factors such as pollution. Additional emphasis is placed on practical skills, data interpretation, and the application of scientific concepts in environmental and health contexts. Keywords: ecosystems, biodiversity, food chains, photosynthesis, genetic inheritance, homeostasis, endocrine system, pollution, data interpretation, practical biology, energy transfer.