Life Functions

1
Life Functions

• Pages 22 25
• and
• AIM 1

2
Life Functions

• How do you know when something is alive?
• They perform certain life functions
• These are very similar to the Characteristics
  of Living Things

3
Nutrition

• Ingest to take in food
• Digest to break down food (use special
  chemicals)
• Absorption the food passes into cells
• Egest to eliminate solid waste

4
Respiration

• Exchange of gases
• Body gets energy by linking the oxygen you breath
  with the food you eat
• Digested food and oxygen release energy and
  wastecalled cellular respiration
• Cellular Respiration burn food and get energy

5
Reproduction

• The ability to produce offspring

6
Locomotion

• Movement without help

7
Response to Stimuli

• If you itch, you react by scratching
• (response / stimuli)
• Hand on hot stove
• Sneezing (inborn response)

8
Excretion

• Get rid of food we can not or do not use

9
Circulation

• Blood circulates in body in blood vessels

10
Secretion

• Production of a biochemical that is releases for
  use by the organism of for excretion