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7.4 Homeostasis & Cells p214

7.4 Homeostasis & Cells p214. Q: How do individual cells maintain homeostasis? A: Unicellular organisms grow, respond to the environment, transform energy & reproduce. The Cell as an Organism. Homeostasis-maintain constant internal conditions. Cells must: Grow Respond to environment

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7.4 Homeostasis & Cells p214

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  1. 7.4 Homeostasis & Cells p214 Q: How do individual cells maintain homeostasis? A: Unicellular organisms grow, respond to the environment, transform energy & reproduce.

  2. The Cell as an Organism • Homeostasis-maintain constant internal conditions. Cells must: • Grow • Respond to environment • Transform energy • Reproduce

  3. Multicellular Life Q: How do the cells of multicellular organisms work together to maintain homeostasis? A:They become specialized for particular tasks & communicate with one another. • Cell Specialization-different cells, play different rolls, specific tasks. • Specialized for both animals & plants.

  4. Levels of Organization • Smallest to largest Cell Tissue Organ Organ system

  5. Cells communicate using receptors-specific protein to whose shape fits that of a specific molecular messenger, such as a hormone.

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