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Antibodies are made from 4 chains of peptides, two heavy chains and two light chains. There is also a constant region (Fc) and a variable region (Fab) which are used to bind to cells and antigens respectivel...

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 has...

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 calle...

DNA is made up of two anti-parallel strands running in opposite directions. It is made up of individual monomers called nucleotides which in turn contain: a sugar (deoxyribose), a base (A, G, C or T), and ph...

Eukaryotic cells: bigger overall, chromosomes are linear and can be coiled round proteins for folding, larger ribosomes, they contain membrane bound organelles such as the nucleus, mitochondria, chlorolplast...