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Biology - Coggle Diagram
Biology
Cells, Organisation and Microscopy
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Organs are a group of tissues in a living organism that have been adapted to perform a specific function.
Organs are organised into organ systems, which work together to form organisms
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Transport in cells
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Diffusion is the spreading out of particles resulting in a net movement from an area of higher concentration to an area of lower concentration
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A single-celled organism has a relatively large surface area to volume ratio. This allows sufficient transport of molecules into and out of the cell to meet the needs of the organism.
In multicellular organisms, surfaces and organ systems are specialised for exchanging materials.
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Respiration
The energy transferred by respiration in cells is used by the organism for the continual enzyme controlled processes of metabolism that synthesise new molecules.
Types of Respiration
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As the oxidation of glucose is incomplete in anaerobic respiration much less energy is transferred than in aerobic respiration
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Cellular Respiration is exothermic and is continuously occurring in living cells. The energy transferred supplies all energy needed for living processes
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