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					 Characteristics of Living Things
1. Cellular Organization
  a. Unicellular – one cell
Characteristics of Living Things
b. Multicellular – more than one cell;
   cells are specialized
 Characteristics of Living Things
2. Contain Similar Chemicals
   (carbohydrates, lipids, protein,
   nucleic acids)
Characteristics of Living Things
3. Use Energy
Characteristics of Living Things
4. Respond to Stimuli ( change in
   surroundings)
 Characteristics of Living Things
5. Grow (get larger) and
   Develop (get more complex)
Characteristics of Living Things
6. Reproduce (make babies!)
Spontaneous Generation -
   Idea that life comes
  from nonliving things
Francesco
  Redi
Disproved
spontaneous
generation with
Meat & Maggot
experiment
(1668)
Louis Pasteur
       Disproved
       spontaneous
       generation
       with 150 year
       old soup
       (1864)
Life
Comes
from Life!
Needs of Living Things:
1. Food
 a. Autotroph – makes own food
Needs of Living Things:
b. Heterotroph – eats other living
   things
Needs of Living Things:
2.Water
 Needs of Living Things:
3.Living Space
Needs of Living Things:
4. Stable Internal Conditions
 a. Homeostasis= keeping
    internal conditions stable

				
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