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.
Biomolecules and Enzymes
- Describe the elements and building blocks of carbohydrates, proteins and fats, and state the role of each in living organisms6Q&A pairs
- Explain that enzymes are biological catalysts, describe the lock and key model, and explain the effects of temperature and pH on enzyme activity4Q&A pairs
- Describe the food tests for starch, reducing sugars, proteins and fats, including the reagents used and the colour changes seen7Q&A pairs
Cell Structure and Organisation
- Identify the parts of animal and plant cells, state the function of each part, and describe the differences between animal and plant cells5Q&A pairs
- Describe how cells are specialised for their functions and explain how cells are organised into tissues, organs, organ systems and organisms3Q&A pairs
- Use a light microscope to observe cells, prepare a simple slide, and calculate magnification using the relationship between image size and actual size6Q&A pairs
Ecology and Environment
- Describe food chains and food webs, and explain how energy flows from the Sun through producers and consumers5Q&A pairs
- Describe the effects of human activity on the environment, including pollution and habitat loss, and ways to reduce the harm6Q&A pairs
- Describe the carbon cycle, including the roles of photosynthesis, respiration, decomposition and combustion6Q&A pairs
Homeostasis and Coordination
- Define homeostasis and explain how blood glucose is controlled by insulin and the role of negative feedback6Q&A pairs
- Describe the structure of the human eye and explain how it responds to changes in light intensity4Q&A pairs
- Describe the parts of the human nervous system and explain the reflex arc as a fast, automatic response6Q&A pairs
Movement of Substances
- Define active transport, explain why it requires energy, and describe examples such as mineral uptake by root hairs3Q&A pairs
- Define diffusion, describe how substances move down a concentration gradient, and explain its importance in living organisms4Q&A pairs
- Define osmosis as the movement of water across a partially permeable membrane and explain its effects on animal and plant cells5Q&A pairs
Nutrition
- Describe the structure of a leaf and explain how its features are adapted for photosynthesis and gas exchange4Q&A pairs
- State the word equation for photosynthesis, describe the raw materials and conditions needed, and explain how light, carbon dioxide and temperature affect the rate4Q&A pairs
- Describe the parts of the human digestive system, the process of physical and chemical digestion, and the absorption of digested food3Q&A pairs
Reproduction and Inheritance
- Explain the basics of inheritance using genes and alleles, and work out simple genetic crosses with a Punnett square4Q&A pairs
- Describe the parts of a flower and explain pollination, fertilisation and seed formation in flowering plants6Q&A pairs
- Describe sexual reproduction in humans, including fertilisation and the development of the baby in the uterus6Q&A pairs
Respiration and Gas Exchange
- Define respiration, write word equations for aerobic and anaerobic respiration, and compare the energy they release6Q&A pairs
- Explain how gas exchange happens in the alveoli and describe how they are adapted for fast diffusion5Q&A pairs
- Describe the parts of the human breathing system and explain how breathing in and breathing out happen3Q&A pairs
Transport in Organisms
- Describe the components of human blood and explain the functions of red blood cells, white blood cells, platelets and plasma7Q&A pairs
- Describe the structure of the human heart and the circulatory system, and explain how blood is pumped around the body in a double circulation6Q&A pairs
- Describe how water and mineral salts are transported in the xylem and how food is transported in the phloem, and explain transpiration4Q&A pairs