OCR A Level Biology:复习笔记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:复习笔记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:复习笔记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: 复习笔记：3.1.1 Diffusion
CIE IGCSE Biology: 复习笔记：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: 复习笔记：3.1.2 Factors that Influence Diffusion
CIE IGCSE Biology: 复习笔记：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: 复习笔记：2.1.4 Converting Between Units: Extended
CIE IGCSE Biology: 复习笔记：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: 复习笔记：2.1.3 Magnification Formula
CIE IGCSE Biology: 复习笔记：2.1.3 Magnification Formula Magnification Formula Calculating magnification and specimen size using millimetres as units Magnification is calculated using the following...
CIE IGCSE Biology: 复习笔记：2.1.2 Organisation of Cells
CIE IGCSE Biology: 复习笔记：2.1.2 Organisation of Cells Producing New Cells The cells in your body need to be able to divide to help your body grow and repair itself Cells grow and divide over and...
CIE IGCSE Biology: 复习笔记：2.1.1 Cell Structure
CIE IGCSE Biology: 复习笔记：2.1.1 Cell Structure Animal & Plant Cells Animals The main features of animals: They are multicellular Their cells contain a nucleus with a distinct membrane Their ...
