CIE IGCSE Biology: 复习笔记:3.1.7 Active Transport
CIE IGCSE Biology: 复习笔记:3.1.7 Active Transport Active Transport Active transport is the movement of particles through a cell membrane from a region of lower concentration to a region of higher...
CIE IGCSE Biology: 复习笔记:3.1.7 Active Transport Active Transport Active transport is the movement of particles through a cell membrane from a region of lower concentration to a region of higher...
CIE IGCSE Biology: 复习笔记:3.1.6 Osmosis in Animals & Plants Osmosis in Plant Tissues When water moves into a plant cell, the vacuole gets bigger, pushing the cell membrane against the cell w...
CIE IGCSE Biology: 复习笔记:3.1.4 Osmosis Osmosis All cells are surrounded by a cell membrane which is partially permeable Water can move in and out of cells by osmosis Osmosis is the diffusion of...
CIE IGCSE Biology: 复习笔记:3.1.3 Water Water as a Solvent Water is important for all living organisms as many substances are able to dissolve in it (it is a solvent) This makes it incredibly usef...
Biochemical Tests: Reducing Sugars & Starch There are a number of tests that can be carried out quickly and easily in a lab to determine if a sample contains a certain type of sugar The followi...
Polysaccharides: Structure Starch, glycogen and cellulose are polysaccharides Polysaccharides are macromolecules (polymers) that are formed by many monosaccharides joined by glycosidic bonds in a c...
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The Glycosidic Bond Forming the glycosidic bond To make monosaccharides more suitable for transport, storage and to have less influence on a cell’s osmolarity, they are bonded together to form disa...
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Monosaccharides Sugars can be classified as reducing or non-reducing; this classification is dependent on their ability to donate electrons Reducing sugars can donate electrons (the carbonyl group ...
Monomers & Polymers There is a massive variety of life within and between organisms however the biochemical basis of life is similar for all living things The key molecules that are requ...
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