Chapter 7-4Homeostasis
Homeostasis• Maintenance of a relatively constant internalphysical and chemical environment– How do individual cells maint...
Vocabulary• Multicellular – composed of many cells• Unicellular – composed of only one cell• Tissue – group of similar cel...
Multicellular Life• Cells of all multicellularorganisms must work together• Specialized cells of multicellularorganisms ar...
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Chapter 7 4

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Chapter 7 4

  1. 1. Chapter 7-4Homeostasis
  2. 2. Homeostasis• Maintenance of a relatively constant internalphysical and chemical environment– How do individual cells maintain homeostasis?• Unicellular organisms grow, respond to theenvironment, change food or sunlight into usefulenergy, and reproduce
  3. 3. Vocabulary• Multicellular – composed of many cells• Unicellular – composed of only one cell• Tissue – group of similar cells that worktogether• Organ – groups of tissues that work together(nervous and connective tissue in a muscle)• Organ system – group of organs that worktogether (stomach, intestines, and pancreaswork together to digest food)
  4. 4. Multicellular Life• Cells of all multicellularorganisms must work together• Specialized cells of multicellularorganisms are organized intotissues

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