Across
- 4. Nutrient, used in phosphates of nucleic acids and phospholipids of membranes, often limited
- 5. Organelle site of photosynthesis
- 10. Contains all gases surrounding earth
- 11. Describes a situation where oxygen is present
- 13. Nutrient, forms the backbone for all macromolecules in living things
- 14. Describes a situation where oxygen is not present
- 15. Contains all living things on earth
- 17. Organelle site of steps 2 and 3 of aerobic celluar respiration
- 18. Type of ogrnaism that must eat other organisms to obtain energy.
Down
- 1. Type of ogranism that decomposes biotic compounds into abiotic compounds. recyclers
- 2. Anything that has mass and takes up space, makes up everythin
- 3. Contains all soil and rocks on earth
- 6. Contains all water on earth
- 7. Adenosine diphosphate, uncharged energy storage molecule with 2 phosphates
- 8. Substances created during a chemical reaction changed into products
- 9. Nutrient, used in proteins and nucleic acids, must be fixed for living things to use, often limited
- 12. Type of organism that is able to make its own food, base of the food chain
- 13. Pigment in chloroplasts, used to trap light energy during photosynthesis
- 14. Adenosine triphosphate, charged energy storage molecule with 3 phosphours groups
- 16. Substances at the begining of a chemical reaction, chnaged into products