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 ...
OCR A Level Biology:复习笔记2.1.9 Prokaryotic & Eukaryotic Cells
Comparison of Prokaryotic & Eukaryotic Cells Animal and plant cells are types of?eukaryotic?cells, whereas bacteria are a type of?prokaryote Prokaryotic cells are much?smaller?than eukaryotic c...
OCR A Level Biology:复习笔记2.1.8 The Cytoskeleton
The Cytoskeleton Within the?cytoplasm?of cells, there is an extensive?network?of?protein fibres This is known as the?cytoskeleton The cytoskeleton is made up of?two?main types of protein fib...
OCR A Level Biology:复习笔记2.1.7 Organelles & the Production of Proteins
Organelles & the Production of Proteins In cells,?many organelles?are involved in the?production?and?secretion?of?proteins Organelles are?specialised parts of a cell?that carry out a particular...
