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Muscle is made of many myofibrils. These contain many myofilaments. Within each myofilaments is a string of sarcomeres. Each sarcomere contains myosin (thick filaments) and actin (thin filaments). Myosin ...

Vaccinations contain a dead or inactive form of a pathogen, which is a disease causing microorganism (such as bacteria and viruses). When people are vaccinated, the inactivated pathogen goes through the b...

White blood cells can kill pathogens in multiple ways, one of these is called phagocytosis. During phagocytosis, a specific white blood cell called a phagocyte recognises the bacteria through a process ca...

The problem here can be solved quite easily by thinking about the graph. A stationary point occurs on a graph when it becomes 'flat'. You can think of this visually as the top of a hill or the bottom of a...

There are three key stages to revising for a speaking exam. The first, highlighting the different topics up for discussion and what questions might come out of these. Using mind maps, researching the topi...