Across
- 3. compound that occurs at room temperature as a clear liquid
- 5. a process in which substances are changed into others
- 6. the energy which is stored in the bonds of chemical compounds
- 7. an organism capable of synthesizing its own food
- 10. an artifact that has been created by someone or some process
- 13. a nucleotide derived from adenosine that occurs in muscle tissue the major source of energy for cellular reactions
- 16. organelle in which photosynthesis takes place
- 18. the simplest structural unit of an element or compound
- 20. a sheet of tissue that lines or connects organs or cells
- 21. a polysaccharide that is the chief constituent of all plant tissues and fibers
- 22. any source of usable power
- 23. a monosaccharide sugar that has several forms
- 26. a mathematical statement that two expressions are the same
Down
- 1. a specialized part of a cell; analogous to an organ
- 2. having cells that lack membrane-bound nuclei
- 4. the first stage of photosynthesis during which energy from light is used for the production of ATP
- 5. a whole formed by a union of two or more elements or parts
- 8. the organic processes that are necessary for life
- 9. a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances
- 11. an idea evoked by some experience
- 12. the basic structural and functional unit of all organisms
- 14. plant tissue that conducts synthesized food substances
- 15. formation of compounds in plants aided by radiant energy
- 17. diffusion of molecules through a semipermeable membrane
- 19. a complex protein produced by cells that acts as a catalyst
- 24. a colorless, odorless gas that is essential for respiration
- 25. an oxide containing two atoms of oxygen in the molecule