unit 2 vocab

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Across
  1. 2. Nutrient, used in phosphates of nucleic acids and phospholipids of membranes, is often limited
  2. 4. Organell, site of steps 2 and 3 of aerobic cellular respiration
  3. 6. Describes a situation in which oxygen is not present
  4. 9. Type of organism that breaks down biotic compounds into compounmds into compounds, recyclers
  5. 11. The First step of photosynthesis uses sunlight to split H2O and ATP and NADPH; O2 is released
  6. 13. Organelle site of photosynthesis
  7. 14. Substance at the beginning of a chemical reaction is changed into products
  8. 16. Second step of anaerobic respiration. 2 types include alcoholic and lactic acid
  9. 19. Describes a situation in which oxygen is present
Down
  1. 1. The sphere of Earth, all the water on Earth
  2. 3. Pigment of chloroplasts, used to trap light energy during photosynthesis
  3. 5. The sphere of Earth, all the gases surrounding Earth
  4. 7. The sphere of Earth, all the solid and rocks on Earth
  5. 8. Substances created during a chemical reaction, from reactants
  6. 10. The sphere of Earth, all living things
  7. 12. Nutrient, used in proteMitochondrions, must be "fixed" for living things to use.
  8. 15. Adenosine triphosphate, a charged energy storage molecule with 3 phosphorus groups
  9. 17. Anything that has mass and takes up space makes up everything
  10. 18. Nutrient forms the backbone for all macromolecules in living things
  11. 19. Adenosine diphosphate, an uncharged energy storage molecule with 2 phosphate groups