Biology

3. Nutrient, used in phosphates of nucleic acids and phospholipids of membranes, often limited
4. Adenosine diphosphate, uncharged energy storage molecule with 2 phosphates
5. Substance at the beginning of chemical reaction changed into products
11. Organelle - site of photosynthesis
12. Sphere of earth, all the soil and rocks on earth
15. site of steps 2 and 3 of aerobic cellular respiration
17. Adenosine triphosphate, charged energy storage molecule with 3 phosphorus groups
20. Describes a situation in which oxygen is present
21. used in proteins and nucleic acids, must be 'fixed' for living things to use, often limited
23. First step of aerobic respiration, breaks down glucose (ch1206) into pyruvate, make some nadh

1. Sphere of earth, all living things on earth
2. Sphere of earth all water on earth
6. Sphere of earth, all the gases surrounding earth
7. Pigment in chloroplast used to trap light energy during photosynthesis
8. Process of breaking down glucose to make ATP starts with glucose and oxygen and ends with carbon dioxide and water
9. Second step of anaerobic respiration, two types include alcoholic and lactic acid
10. Substance created during a chemical reaction made from reactants
13. Process of using light energy to make glucose starts with carbon dioxide and water and ends with glucose and oxygen
14. Describes a situation in which oxygen is not present
16. forms the backbone for all macromolecules in living things
18. Second step of photosynthesis uses energy in ATP in NADPH to make glucose from CO2
19. Anything that has mass and takes up space, makes up everything
22. First step of photosynthesis, uses sunlight to split h2o and make atp and nadph, o2 is released