OCR A Level Biology:復習筆記2.2.5 Polysaccharides
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...
OCR A Level Biology:復習筆記2.2.4 The Glycosidic Bond
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...
OCR A Level Biology:復習筆記2.2.3 Monosaccharides
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 ...
OCR A Level Biology:復習筆記2.2.2 Monomers & Polymers
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...
OCR A Level Biology:復習筆記2.2.1 Properties of Water
Properties of Water Water is of great biological importance. It is the medium in which all metabolic reactions take place in cells. Between 70% to 95% of the mass of a cell is water As 71% of the E...
CIE IGCSE Biology: 復習筆記：3.1.1 Diffusion
CIE IGCSE Biology: 復習筆記：3.1.1 Diffusion Diffusion Diffusion is the?movement of molecules?from a region of its?higher?concentration to a region of its?lower?concentration Molecules?move down a ...
CIE IGCSE Biology: 復習筆記：3.1.2 Factors that Influence Diffusion
CIE IGCSE Biology: 復習筆記：3.1.2 Factors that Influence Diffusion Factors that Influence Diffusion Surface area to volume ratio The?bigger?a cell or structure is, the?smaller its surface a...
CIE IGCSE Biology: 復習筆記：2.1.4 Converting Between Units: Extended
CIE IGCSE Biology: 復習筆記：2.1.4 Converting Between Units: Extended Converting Between Units: Extended Using millimetres and micrometres as units The table below shows how millimetres are related...
CIE IGCSE Biology: 復習筆記：2.1.3 Magnification Formula
CIE IGCSE Biology: 復習筆記：2.1.3 Magnification Formula Magnification Formula Calculating magnification and specimen size using millimetres as units Magnification is calculated using the following...
