biology

2. substances at the beginning of a chemical reaction, changed into products.
8. process of using light energy to make glucose,starts with CO2 and H2O and ends with C6H12O6 and O2
11. nutrient, used in phosphates of nucleic acids and phospholipids of membranes, often limited.
14. pigment in chloroplasts, used to trap light energy during photosynthesis.
16. reactions second step of photosynthesis, uses energy in ATP and NADPH to make glucose(C6H12O6) from CO2.
17. describes a situation in which oxygen is present
18. respiration process of breaking down glucose to make ATP, starts with C6H12O6 and O2 and ends with CO2 and H2O.
19. sphere of the earth, all living things on earth.

1. second step of anaerobic respiration, 2 types include alcoholic and lactic acid.
3. type of organism that is able to make it's own base of the food chain.
4. describes a situation in which oxygen is not present,
5. organelle,site of photosynthesis
6. adenosine triphosphate, charged energy storage molecule with 3 phosphorus groups.
7. nutrient, used in proteins and nucleic acids, must be "fixed" for living things to use, often limited.
9. adenosine diphosphate, uncharged energy storage molecule with 2 phosphates.
10. sphere of earth, all the soil and rocks on earth.
12. sphere of earth,all the water on earth.
13. anything that has mass and takes up space, makes up everything.
15. reactions substances created during a chemical reaction, made from reactants.
17. describes a situation in which oxygen is present.