Living Organisms

7. the breakdown of complex food to simple form inside the cellular cytoplasm
8. the separation and throwing off of waste materials or toxic substances from the cells and tissues of a plant or animal.
9. the ability of the body to defend itself against disease-causing organisms
10. the smallest, basic unit of life that is responsible for all of life's processes
11. biological membrane that separates and protects the interior of a cell from the outside environment
12. any self-regulating process by which an organism tends to maintain stability while adjusting to conditions that are best for its survival.
13. plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process
14. the gelatinous liquid that fills the inside of a cell.
15. a substance that does not contain both carbon and hydrogen

1. the chemical reactions in the body's cells that change food into energy
2. small molecules that are the building blocks of proteins.
3. chemical substances that act like messenger molecules in the body.
4. movement of anything generally from a region of higher concentration to a region of lower concentration.
5. plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process
6. ovement of molecules or ions across a cell membrane from a region of lower concentration to a region of higher concentration—against the concentration gradient.
8. biological catalysts by accelerating chemical reactions.
13. the process by which organisms use oxygen to break down food molecules to get chemical energy for cell functions.