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The sum total of all processes in an organism which convert energy and matter from outside sources and use that matter to sustain the organism's life functions.
The sum total of all processes in an organism which use energy and simple chemical building blocks to produce large chemicals and structures necessary for life.
the sum total of all processes in an organism which break down chemicals to produce energy and simple chemical building blocks.
The process by which green plants and some other organisms use the energy of sunlight and simple chemicals to produce their own food.
Special sructures that allow living organisms to sense the conditions of their internal or external enviroment.
The process by which physical and biological characteristics are transmitted from the parents to the offspring.
The idea that long ago, very simple life forms spontaneously appeared through chemical reations.
A unit of one or more populations of individuals that can reproduce under normal conditions, produce fertile offspring, and are reproductively isolated from other such units.
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