Characteristics of Life
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Cellular Level: membrane. Body level: skin.
-keep insides in and outsides out-
within body: blood, food
whole body: locomotion
The ability to respond to the environment make adjustments to a changing environment.
Break down of food/ absorption of food to be used for energy
Assimilation of Nutrients (digestion)
All chemical reactions of the body's cells; provide energy for life
Breakdown reactions AB -> A+B; release energy
Building-Up reactions A+B -> AB; consumes energy
Removal of waste products produced by metabolism.
ex: urinary, digestive
Formation of new cells for growth, repair, replacement (cellular) production of new individual (organism)
Increase in size of body part or organism can increase size of existing cells or number of cells
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