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Stack #4667341
| Question | Answer |
|---|---|
| what's the first step to prove that an object is a living thing | get a sample of it |
| what is an organelle | the thing inside cells |
| what does it mean when a cell membrane is selectively permeable | same substance can cross it others cannot |
| what are four general functions of cells | to maintain homeostasis, reproduce, remove waste, creates energy |