The characteristics essential for life of a cell

Cell:

• organism have everything they need to be self sufficient.
• in multicelular organism, specialization until some cells do certain things.

Organization:

• Both molecular and cellular organization.
• Living things must be able to organize simple substances into complex ones.
• Living cells organize living things at different levels: 

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  Tissue:a group of cells that perform a common function.
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  Organs:a group of tissues that perform a common function.
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  Organs system: a group of organs that perform a common function
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  Organism: any complete living thing.

Energy use:

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  living things take energy and used for maintenance and growth.
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  living things used their energy in a specific amount and way to get their need in order to equally distributed it.
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  sunlight is converted to pothosynthesis that is  main way of energy source.

Homeostasis:

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  Living things will make changes in response of a stimulus in their environment.
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  A behavior is a complex set of  responses.

Grow:

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  cell division: the orderly formation of cells.
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  cell enlargement:the increase in size in a cell. Cells grow to a certain size and then divide.
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  An organism gets larger as its number of cell increases.

Reproduction:

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  Reproduction is not essential for the survival of an individual organism, but must occur for a species to survive.
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  All living things reproduce in one of the following ways:
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  Asexual reproduction-producing offspring with out the used of gametes.
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  sexual reproduction:producing offspring with the joining of sex cells.