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Life processes tell apart living things from non-living things. |
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Life processes are carried out by systems within a body of living thing. |
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Plant and animal bodies are made up of cells, which are often organised as tissues and organs to carryout important life processes. |
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Living thing have different levels of complexity and organisation. they can vary from a single cell to a whole organism. |
Life Processes: What are they? They are the things that happen inside a living organism
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Activity |
Process |
Things that happen inside the body |
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Respiration | Transfer of ENERGY from the FOOD to the organism |
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Nutrition | Makes available RAW MATERIALS & ENERGY for body processes |
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Sensitivity | Response to changes in/or outside the body. respond to stimuli. |
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Movement | Animals can move parts of their body or even their whole body from one place to another. Plants can't move from place to place, but can move slowly by growing in a certain direction. |
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Reproduction | Organisms must produce new off-springs to replace the dying ones in the population. |
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Growth | An increase in size, because of increase in the number and size of cells. Animals have limitation on their size, however plants carry on growing. |
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Excretion | Organisms are like factories. Raw materials are constantly being taken in and used to produce ENERGY and other useful substances. Some of the products are harmful and useless. They are got rid of by the body. This is called excretion! |
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For life processes to occur continuously the body systems must adjust to changes so that the conditions inside the organism are just right. |
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Systems in body must work with each other for organism to function as a whole. |
Cells, Tissues, Organs and Organisms