2.12 - Understand definitions of diffusion, osmosis and active transport. - Diffusion: The passive movement of particles down a concentration gradient. - Osmosis: The movement of water molecules down a water-potential gradient through a selectively-permeable membrane....
FLOWERING PLANTS (2.17 - 2.22) 2.17 - Describe the process of photosynthesis and understand its importance in the conversion of light energy to chemical energy. - Photosynthesis uses sunlight to convert carbon dioxide and water into glucose and oxygen. - Light energy...
2.44 - Describe the structure of the thorax, including the ribs, intercostal muscles, diaphragm, trachea, bronchi, bronchioles, alveoli and pleural membranes. Part of the Thorax Description Ribs Acts as a protective cage for the lungs. Can be lifted by intercostal...
2.49 - Understand why simple, unicellular organisms can rely on diffusion for movement of substances in and out of the cell. - Unicellular organisms can rely on diffusion for movement of substances in and out of the cell. - A transport system is not required because...
FLOWERING PLANTS (2.67) 2.67 - Understand the origin of carbon dioxide and oxygen as waste products of metabolism and their loss from the stomata of a leaf. - Carbon dioxide and oxygen are waste products of metabolism. • Carbon dioxide is a waste product of...
2.77 - Understand that organisms are able to respond to changes in their environment. - Organisms are sensitive and are able to respond to changes (stimuli) in their environment. 2.78 - Understand that homeostasis is the maintenance of a constant internal environment...
2.33 - Understand that the process of respiration releases energy in living organisms. - Respiration is a process that breaks down glucose to release energy in the form of ATP. 2.34 - Describe the differences between aerobic and anaerobic respiration. Aerobic...
2.1 - Describe the levels of organisation within organisms: organelles, cells, tissues, organs and systems. Level of Organisation Description Organelles Specialised structures within any cell. Cells The smallest structural and functional unit of an organism. Tissues A...
2.5 - Identify the chemical elements present in carbohydrates, proteins and lipids (fats and oils). - Carbohydrates: Carbon, Hydrogen, Oxygen - Lipids: Carbon, Hydrogen, Oxygen - Proteins: Carbon, Hydrogen, Oxygen, Nitrogen (some may contain Sulphur) CHO CHO CHON[S]...