7th grade science vocabulary

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Across
  1. 6. The basic unít of structure and f unctíon in living things.
  2. 7. converts food into essential nutrients for body cells
  3. 8. A group of similar cells that perform a specific function.
  4. 11. takes in oxygen and releases carbon dioxide from the body
  5. 12. system group of organs that work together to perform a specific function
  6. 13. represents the highest level of organization.
Down
  1. 1. removes wastes from the body
  2. 2. the process of keeping conditions inside fhe body constant, no matter the conditions outside the body. Example: when a lizard gets cold they worm themselves in the sun.
  3. 3. recognizes, attacks and destroys cells that can cause disease
  4. 4. produces movement
  5. 5. Blood vessels transport blood, which carries oxygen, carbon dioxide, nutrients, wastes, etc. The heart pumps blood.
  6. 9. sends, receives, and interprets information from all parts of the body
  7. 10. A body structure that is composed of different kinds of tissues that work together.