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a space or gap between two teeth. Many species of mammals have diastemata as a normal feature,...
single-celled brown algae found in fresh water and seawater. They have hard, shell-like cell...
a special kind of biological identification key which consists of sets of organised pairs of...
minerals and vitamins that are taken as nutritional supplements to regular food (in the form of...
process by which cells become specialised to perform a specific function.
the spontaneous movement of molecules, atoms or ions, from an area of higher concentration to an...
the difference between the concentrations of a specific molecule in two adjacent areas.
the breaking down of large, complex food particles into smaller, soluble molecules which can be...
the body system concerned with the digestion and absorption of nutrients.