Across
- 6. an organelle within the cells of plants and certain algae that is the site of photosynthesis,
- 9. A form of phosphoric acid, which contains phosphorus
- 12. A type of sugar; the chief source of energy for living organisms.
- 13. a substance that allows plants to absorb sunlight and convert it into usable energy.Epidermis he outer la
- 17. microorganisms that define the limits of life on Earth.
- 19. cell organelles that generate most of the chemical energy needed to activate the biochemical reactions of the cell.
- 20. he process by which green plants and certain other organisms transform light energy into chemical energy.
- 23. Carbohydrates, or carbs, are sugar molecules
- 24. A small particle with a negative charge that is found in all atoms.
- 25. small structure in a cell that is surrounded by a membrane and has a specific function.
- 27. structure found inside cells that is involved in making proteins
Down
- 1. membrane-bound compartments inside chloroplasts and cyanobacteria
- 2. a special type of dipole-dipole attraction between molecules, not a covalent bond to a hydrogen atom
- 3. A molecule made up of amino acids.
- 4. A substance present in all living cells that provides energy for many metabolic processes and is involved in making RNA.
- 5. The process by which plants and certain other organisms transform light energy into chemical energy
- 7. A state of balance between all the body systems necessary to survive and function properly.
- 8. elementary particles with no charge, no resting mass, and travel at the speed of light.
- 10. nonmetallic chemical element belonging to the oxygen group (Group 16 [VIa] of the periodic table), one of the most reactive of the elements
- 11. A chemical compound (such as protein, fat, carbohydrate, vitamin, or mineral) contained in food
- 14. an ancient group of photosynthetic microbes that occur in most inland waters and that can have major effects on the water quality and functioning of aquatic ecosystems.
- 15. a reactive element that is found in water, rocks, and free as a colorless tasteless odorless gas which forms about 21 percent of the atmosphere
- 16. An organism that depends on light for most of its energy and principally on organic compounds for its carbon Supplement
- 18. the tissue of vascular plants that transports water and nutrients from the soil to the stems and leaves.
- 21. a simple molecule composed of two small, positively charged hydrogen atoms and one large negatively charged oxygen atom
- 22. is the vascular tissue in charge of transport and distribution of the organic nutrients
- 26. a pigment that gives plants their green color