CIE IGCSE Biology: 复习笔记：5.1.5 Enzymes & pH: Extended
CIE IGCSE Biology: 复习笔记：5.1.5 Enzymes & pH: Extended Enzymes & pH: Extended The optimum pH for most enzymes is 7 but some that are produced in acidic conditions, such as the stomach, h...
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CIE IGCSE Biology: 复习笔记：5.1.4 Enzymes & Temperature: Extended
CIE IGCSE Biology: 复习笔记：5.1.4 Enzymes & Temperature: Extended Enzymes & Temperature: Extended Enzymes are proteins and have a specific shape, held in place by bonds This is extremely i...
CIE IGCSE Biology: 复习笔记：5.1.3 Enzyme Action & Specificity: Extended
CIE IGCSE Biology: 复习笔记：5.1.3 Enzyme Action & Specificity: Extended Enzyme Action & Specificity: Extended Enzymes are specific to one particular substrate(s) as the active site of the ...
CIE IGCSE Biology: 复习笔记：5.1.2 Enzyme Investigations
CIE IGCSE Biology: 复习笔记：5.1.2 Enzyme Investigations Investigating the Effect of Temperature on Amylase Starch solution is heated to a set temperature Iodine is added to wells of a spotting til...
CIE IGCSE Biology: 复习笔记：5.1.1 Enzymes
CIE IGCSE Biology: 复习笔记：5.1.1 Enzymes What Are Enzymes? Enzymes are: Catalysts that speed up the rate of a chemical reaction without being changed or used up in the reaction Proteins Biologica...
CIE IGCSE Biology: 复习笔记：4.1.3 DNA Structure: Extended
CIE IGCSE Biology: 复习笔记：4.1.3 DNA Structure: Extended Structure of a DNA Molecule: Extended DNA, or deoxyribonucleic acid, is the molecule that contains the instructions for growth and develop...
CIE IGCSE Biology: 复习笔记：4.1.2 Food Tests
CIE IGCSE Biology: 复习笔记：4.1.2 Food Tests Food Tests Test for glucose (a reducing sugar) Add Benedict's solution into sample solution in test tube Heat at 60 - 70 °c in water bath for 5 minutes...
CIE IGCSE Biology: 复习笔记：4.1.1 Chemicals & Life
CIE IGCSE Biology: 复习笔记：4.1.1 Chemicals & Life Chemical Elements Most of the molecules in living organisms fall into three categories: carbohydrates, proteins and lipids These all contain ...
CIE IGCSE Biology: 复习笔记：3.1.8 Proteins & Active Transport
CIE IGCSE Biology: 复习笔记：3.1.8 Proteins & Active Transport Importance of Active Transport: Extended Energy is needed because particles are being moved against a concentration gradient, in t...
