Living Non-Living? (biotic) (abiotic)

Organize the following into your table.. Toenail Sun Hair Nerve Cell Leaf Fire Tree bark Water Algae Bacteria

What makes something alive? Ideas?

Characteristics of Living Organisms 1.Cells 2.Organization 3.Energy Use 4.Growth/Development 5.Reproduction 6.Homeostasis

Cells All living things have at least one cell – the cell is the basic unit of all life. If an organism has more then one, then cells are often grouped together for a specific function (i.e. nervous system, digestive system)

Organization All life functions are carried out in an orderly fashion One cell has many structures inside it which have specific functions Cells may group together to perform certain functions (e.g. nervous system) All have a definite form, limited size, limited life span

Energy Use All organisms use energy. This is called metabolism. This energy is used to carry out everything they do.metabolism Autotrophs (plants) use energy from the sun for photosynthesis, to make their own ‘food’ (glucose). Heterotrophs must ingest food to gain energy

Growth/Development Growth is an increase in the amount of living material in the organism. It is accomplished by increasing the number or size of the cells –example a small goldfish gets larger

Development is the changes that occur as the organism matures to adult form example is the metamorphosis of a ladybug →egg → larva → pupa→ adult

Reproduction all reproduce either one parent (asexual) or two parents (sexual), characteristics are passed from one generation to another by genetic code (DNA) –asexual – clone

sexual – combination of both parents

Homeostasis All organisms have the ability to maintain stable internal conditions regardless of external conditions (in order to remain alive.) Examples: –if too hot, your body sweats to cool down –if too cold, your body shivers to produce heat –your body tries to stay the same temperature (37°C ) regardless of the temperature outside it