Singapore · SEABQ&A
BiologyQ&A by dot point
A short Q&A bank for every Singapore Biology syllabus dot point. Each question and answer is drawn directly from our worked dot-point page, so you can scan key concepts before opening the long-form answer.
Biological Molecules and Enzymes
- Describe the elements, building blocks and roles of carbohydrates, fats and proteins6Q&A pairs
- Explain that enzymes are biological catalysts and describe their action using the lock and key model3Q&A pairs
- Describe and explain the effects of temperature and pH on the rate of enzyme-controlled reactions4Q&A pairs
- Carry out and interpret the standard food tests for starch, reducing sugar, protein and fat5Q&A pairs
Cell Structure and Organisation
- Compare the structure of typical plant and animal cells and relate specialised cells to their functions5Q&A pairs
- Describe the levels of organisation from cell to tissue to organ to organ system to organism9Q&A pairs
- Identify the main organelles of plant and animal cells and state the function of each11Q&A pairs
- Use a light microscope to observe cells and calculate magnification and actual size5Q&A pairs
Organisms and Their Environment
- Describe ecosystems and feeding relationships using food chains and food webs4Q&A pairs
- Explain the flow of energy through an ecosystem and the role of decomposers in recycling nutrients3Q&A pairs
- Describe the effects of pollution and deforestation and ways to conserve the environment5Q&A pairs
- Describe the carbon cycle and the processes that add and remove carbon dioxide from the air9Q&A pairs
Homeostasis, Excretion and Coordination
- Explain excretion and describe how the kidney filters the blood and reabsorbs useful substances5Q&A pairs
- Define homeostasis and explain the control of blood glucose by insulin and glucagon5Q&A pairs
- Describe hormonal coordination and compare it with nervous control, using adrenaline as an example3Q&A pairs
- Describe the nervous system and explain the reflex arc as a fast, automatic response5Q&A pairs
Movement of Substances
- Define active transport and explain its role using energy, with examples in cells3Q&A pairs
- Define diffusion and explain its importance in living organisms and the factors affecting its rate4Q&A pairs
- Define osmosis and explain its effects on plant and animal cells in solutions of different concentration6Q&A pairs
- Explain how surface area to volume ratio affects the exchange of substances in organisms6Q&A pairs
Nutrition in Humans and Plants
- Describe how the small intestine is adapted for absorption and explain assimilation5Q&A pairs
- Relate the structure of a leaf to its function in photosynthesis and gas exchange9Q&A pairs
- State the word equation for photosynthesis and explain the conditions needed and the limiting factors4Q&A pairs
- Describe the human digestive system and the role of mechanical and chemical digestion5Q&A pairs
Reproduction, Genetics and Inheritance
- Describe chromosomes, genes and DNA and explain the role of cell division in growth and reproduction6Q&A pairs
- Use genetic diagrams to predict the inheritance of a single gene and explain variation5Q&A pairs
- Describe human sexual reproduction including fertilisation and the adaptations of the gametes5Q&A pairs
- Describe sexual reproduction in flowering plants including pollination and fertilisation5Q&A pairs
Respiration and Gas Exchange
- Compare aerobic and anaerobic respiration and state their word equations and energy yields6Q&A pairs
- Describe the mechanism of breathing in humans, including the role of the ribs and diaphragm4Q&A pairs
- Explain the effects of physical activity on breathing and the harmful effects of tobacco smoke8Q&A pairs
- Describe the human gas exchange system and explain how the alveoli are adapted for gas exchange4Q&A pairs
Transport in Humans and Plants
- Describe the components of blood and explain the functions of red cells, white cells, platelets and plasma8Q&A pairs
- Describe the structure of the heart and relate arteries, veins and capillaries to their functions5Q&A pairs
- Describe the double circulatory system in humans and the path of blood around the body3Q&A pairs
- Describe transport in plants by xylem and phloem and explain transpiration5Q&A pairs