Glossary
Browse the glossary using this index
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Organellesspecialised structures inside a cell | |
Organicderived from living matter | |
Osmoregulationthe maintenance of the optimal water concentration within the bloodstream | |
Osmosisthe movement of water molecules from an area of low concentration to one of high concentration, through a semipermeable membrane | |
Ossificationthe process of bone formation | |
Osteoblasta cell that secretes the substance of bone | |
Osteochondrosisdisease of the growth ossification centres | |
Osteoclasta cell that breaks down bone tissue | |
Osteocytebone cell | |
Outer envelopethe protective layer surrounding a virus | |