CIE IGCSE Biology: 復(fù)習(xí)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(fù)習(xí)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(fù)習(xí)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(fù)習(xí)筆記：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: 復(fù)習(xí)筆記：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: 復(fù)習(xí)筆記：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 ...
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...
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...
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...
