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Food is broken down mechanically by chewing. Saliva secreted from the salivary glands contains amylase which breaks down starch to maltose.
Ethanoic acid is CH3COOH. Acids can ionise, producing H+ ions and in this case, CH3COO (ethanoate) ions. The sodium exists as Na+ ions in solutio...
Size: prokaryotic cells tend to be smaller.Outer layers: prokaryotic cells have a cell membrane surrounded by cell wall, while eukaryotic cells have a cell membrane but o...
Diffusion is the movement of particles from a high to low concentration and does not require energy. An example of diffusion is oxygen moving from the airways (high concentration inhaled) to the lungs (lo...
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