Muscle Fibres: Structure Skeletal muscle makes up the muscles in the body that are attached to the skeleton Skeletal muscle is made up of muscle fibres A muscle fibre is a highly specialised cell-l...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.5.8 Empirical & Molecular Formulae Empirical & Molecular Formulae The molecular formula is the formula that shows the number and t...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.5.7 Practical: Determine the Formula of a Metal Oxide Practical: Determine the Formula of Magnesium Oxide Aim: To determine the empirical formula...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.5.6 Experiment: Finding Formulae of Compounds Formulae of Simple Compounds by Experiment Making Careful Quantitative Measurements The form...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.5.5 Calculate Percentage Yield Calculate Percentage Yield Yield is the term used to describe the amount of product you get from a reaction...
Movement of the Skeleton The effective movement of the human body requires both muscle and an incompressible skeleton This is because muscles will only produce effective movement if they pull on a ...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.5.4 Calculate Reacting Masses Calculate Reacting Masses Chemical equations can be used to calculate the moles or masses of reactants and p...
Limiting Antibiotic Resistance Hospital acquired infections Infections that are contracted by a patient while in hospital are known as hospital acquired infections (HAIs) The transmission of HAIs i...
Types of Antibiotics When humans experience a bacterial infection, they are often prescribed antibiotics Antibiotics are chemical substances that damage bacterial cells with little or no harm to hu...
