EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 復(fù)習(xí)筆記：4.4.1 Alkenes The Alkenes All alkenes contain a?double carbon bond, which is shown as two lines between two of the carbon atoms i.e. C=C All...
Magnification Formula Magnification?is?how many times bigger?the image of a specimen observed is in comparison to the actual (real-life) size of the specimen The?magnification?(M) of an object can ...
Drawing Cells To record the observations seen under the microscope (or from photomicrographs taken) a labelled biological drawing is often made Biological drawings?are line pictures which show spec...
Preparation of Microscope Slides Many biological structures are too small to be seen by the naked eye Optical microscopes are an invaluable tool for scientists as they allow for tissues, cells and ...
Use of Microscopy Microscopes?can be used to analyse?cell components?and observe?organelles Magnification?and?resolution?are two scientific terms that are very important to understand and?distingui...
Practical: Using a Light Microscope Many biological structures are too small to be seen by the naked eye Optical microscopes are an invaluable tool for scientists as they allow for tissues, cells a...
Practical: Investigating the Rate of Transpiration Using a potometer Air movement, humidity, temperature and light intensity all have an effect on the rate at which transpiration occurs The table b...
CIE IGCSE Biology: 復(fù)習(xí)筆記：1.1.4 Features of Organisms The Five Kingdoms The first division of living things in the classification system is to put them into one of?five kingdoms. They are: Anima...
Serial Dilutions Serial dilutions are created by taking a series of dilutions of a stock solution. The concentration decreases by the?same?quantity between each test tube They can either be ‘doubli...
