| A | B |
|---|
| active transport | process by which cells use energy to transport molescules through the cell membrane from low to high concentration |
| amino acid | one of several building blocks of protein |
| cell | basic unit of structure and function that makes up all organisms |
| cell membrane | boundary between the cell and its environment |
| cell respiration | process in which the nutrients are broken apart, releasing the chemical energy stored in hem |
| chlorplast | green organelle that contains chyorophyll, place of photosynthesis |
| digestion | process that breaks down large food molecules into simple molecules that an organ can use |
| diffusion | movement of molecules from areas of high concentration to low concentraion |
| circulation | flow of materials within a cell as well as between parts of a multicellular organism |
| cytoplasm | jellylike substance that is between the cell membrane and the nucleus and that contains specialized structures |
| enzymes | proteins that speed up the rate of chemical reactions in living things |
| excretion | removal of all the wastes produced by the cells of the body |
| homeostasis | a stable internal balance |
| hormone | a chemical produced in the endocrine gland |
| immunity | the boy's ability to destry pathogens before they cause disease |
| inorganic | a molecule that does not contain carbon |
| metabolism | all chemical reactions that occur with the cells of an organism |
| mitochondria | contains enzymes used to extract ENERGY from nutrients |
| nucleus | CONTROLLS the cell's metabolism and stores genetic information |
| organ | body structure made of different kinds of tissues combined to perform specific function |
| organ system | several organs that work together to perform a major function in the body |
| organelle | a struction within the cell that performs a specific funtion |
| organic | molecules that contains carbon |
| receptor molecule | protein molecule in the cell menbrane that can receive chemical messages from other cells |
| repiration | process by which chemical bond energy is released for the use in cells |
| reproduction | process by which organisms produce organisms of the same type |
| ribosome | site of protein production |
| simple sugar | result of digestion of starch, glucose |
| tissue | group of specialized cells that perform a specific function |
| vacuole | storage sacs within the cytoplasm that may contain either wastes or useful materials such as water or food |
