biology vocab crossword

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Across
  1. 3. system consists of the organs (ex. heart and blood vessels) and fluids that transport materials like oxygen and nutrients to tissue throughout the body as well as carry away waste products they create.
  2. 7. a very large molecule, such as a protein, made of many smaller units (e.g. amino acids) joined together.
  3. 9. a long chain of amino acids joined together, forming a specific shape.
  4. 10. exchange process through which oxygen and carbon dioxide are transferred in opposite directions across a specialized surface.
  5. 13. transport movement of substances from lower to higher concentration (i.e. against their concentration gradient) this needs energy from respiration.
  6. 14. system a system of organs in which the major function is to convert food into simpler, absorbable nutrients to keep the body functioning and healthy.
  7. 16. system consists of the set of organs and tissue involved in the uptake of oxygen from the atmosphere and the release of carbon dioxide generated during aerobic respiration, this gas exchange is also called breathing.
  8. 17. the movement of molecules from higher to lower concentration.
  9. 18. cycle the process that moves carbon between plants, animals, and microbes; minerals in the earth and the atmosphere.
Down
  1. 1. gradient the quantity/amount of a substance in a defined space or volume.
  2. 2. the movement of water from higher to lower water concentration through a partially permeable membrane.
  3. 4. hydtrates molecules that provide a ready source of energy for the body.they come in simple forms such as glucose.
  4. 5. bacteria and fungi that feed on dead plants and animal material.
  5. 6. maintaining a constant internal environment.
  6. 8. substances such as fats and oils, used as a store of energy in living things.
  7. 11. cycle a repeating cycle of processes during which nitrogen moves through both living and non living things.
  8. 12. the process of breaking large insoluble molecules into small soluble ones.
  9. 15. transport a movement of molecules across membranes that does NOT require am input of chemical energy (ATP).