Nature of Life

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 1. A substance formed by chemical union of two or more elements or ingredients in definite proportion (8)
  2. 3. The bodily process of discharging waste matter (9)
  3. 5. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like (3)
  4. 7. The process of generating offspring (12)
  5. 8. Greasy substance in food and body tissue (3)
  6. 9. An abstract part of something (7)
  7. 10. A substance that initiates or accelerates a chemical reaction without itself being affected (8)
  8. 12. Happening or arising without apparent external cause (11)
  9. 13. The metabolic processes whereby certain organisms obtain energy from organic molecules (11)
  10. 14. Any ___ information or event (8)

Down

  1. 1. An essential structural component of living cells and source of energy for animals (12)
  2. 2. All the people living at the same time or of approximately the same age (10)
  3. 4. Any of several complex proteins that are produced by cells and act as catalysts in specific (6)
  4. 5. The organic process by which food is converted into substances that can be absorbed into the body (9)
  5. 6. Clear liquid we drink that falls as rain (5)
  6. 11. A bodily process occurring due to the effect of some antecedent stimulus or agent (8)