General Science
The Human Circulatory System
The circulatory system carries blood, oxygen and nutrients through the body. The heart, blood vessels and blood are key biology topics for exams.
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General Science
The Human Respiratory System
The respiratory system takes in oxygen and removes carbon dioxide. The lungs, breathing process and gas exchange are common biology exam topics.
General Science
The Human Nervous System
The nervous system controls and coordinates all body activities. The brain, spinal cord, neurons and reflex actions are key topics for exam biology.
General Science
Vitamins, Their Sources and Deficiency Diseases
Vitamins are essential nutrients needed in small amounts. Their chemical names, sources and deficiency diseases are very high-scoring exam facts.
General Science
Human Diseases: Bacterial and Viral
Many human diseases are caused by bacteria and viruses. Knowing the causative agents and affected organs is essential for biology exam questions.
General Science
The Cell: Structure and Functions
The cell is the basic structural and functional unit of life. Cell parts, organelles and the difference between plant and animal cells are key exam facts.
General Science
Photosynthesis and Plant Nutrition
Photosynthesis is the process by which green plants make food using sunlight. Its equation, requirements and products are common biology exam topics.
General Science
Classification of Living Organisms
Living organisms are grouped into kingdoms for easy study. The five-kingdom classification and the rules of naming are important exam biology topics.
General Science
Blood Groups and Human Blood
Human blood is grouped by the ABO and Rh systems. Blood components, groups and transfusion rules are very common biology questions in exams.