Biology

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Across
  1. 1. a macromolecule made of amino acids, essential for body structure and function
  2. 3. proteins that speed up chemical reactions in the body
  3. 6. a body fluid that transports oxygen and nutrients
  4. 8. single called organisms that can be both helpful and harmful
  5. 10. organelle that stores water, nutrients, or waste inside a cell
  6. 12. the movement of particles from an area of high concentration to lower concentration area
Down
  1. 2. a group of tissues working together to perform a specific function
  2. 4. a thing that surrounds a cell and controls what enters and leaves
  3. 5. what organisms consume to get energy and nutrients
  4. 7. the basic unit of all living things
  5. 9. a cold region near the North Pole; also related to biological adaptation
  6. 11. condition that negatively affects the structure of function of organism