Life Functions
About this set
Created by:
mrsantoniello on October 27, 2009
Subjects:
7th Grade Science-Chemical Building Blocks
Classes:
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23 terms
Terms | Definitions |
|---|---|
 cells | the basic building blocks of life |
| nutrition | to ingest nutrients (food) |
| gas exchange | exchange of gases; we take in O2 and release CO2; plants take in CO2 and release O2 |
| energy | allows work to happen in cells |
| digestion | when nutrients are broken down into small enough parts to enter the cell |
| synthesis | rebuilding the nutrients into forms that will be useful for the organism |
| transport | to distribute (passive or active) |
| passive transport | the cell does NO work |
| active transport | the cell works to get nutrients in and out of the cell |
| excretion | the removal of liquid waste from the body |
| elimination | the removal of solid waste from the body |
| grow | cells divide to change in size |
| multi-celled | many-celled |
| uni-celled | one-celled |
| life span | all living things are born and their lives will come to an end |
| reproduction | asexual (1 parent cell makes new cells) or sexual (2 parent cells make new cells) |
| respond | reacting to a stimuli |
| movement | to change location or position |
| homeostasis | a balance that organisms try to maintain in their surroundings |
| locomotion | organisms moving from one place to another |
| tropism | organism moves within |
| phototropism | moving towards the sun |
| geotropism | moving towards gravity |
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