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...
CIE IGCSE Biology: 复习笔记：3.1.7 Active Transport
CIE IGCSE Biology: 复习笔记：3.1.7 Active Transport Active Transport Active transport is the movement of particles through a cell membrane from a region of lower concentration to a region of higher...
CIE IGCSE Biology: 复习笔记：3.1.5 Osmosis Experiments
CIE IGCSE Biology: 复习笔记：3.1.5 Osmosis Experiments Osmosis in Plant Tissues When water moves into a plant cell, the vacuole gets bigger, pushing the cell membrane against the cell wall Water en...
CIE IGCSE Biology: 复习笔记：3.1.7 Active Transport
CIE IGCSE Biology: 复习笔记：3.1.7 Active Transport Active Transport Active transport is the movement of particles through a cell membrane from a region of lower concentration to a region of higher...
CIE IGCSE Biology: 复习笔记：3.1.6 Osmosis in Animals & Plants
CIE IGCSE Biology: 复习笔记：3.1.6 Osmosis in Animals & Plants Osmosis in Plant Tissues When water moves into a plant cell, the vacuole gets bigger, pushing the cell membrane against the cell w...
CIE IGCSE Biology: 复习笔记：3.1.4 Osmosis
CIE IGCSE Biology: 复习笔记：3.1.4 Osmosis Osmosis All cells are surrounded by a cell membrane which is partially permeable Water can move in and out of cells by osmosis Osmosis is the diffusion of...
