| A | B |
|---|
| active transport | the process by which cells use energy to transport molecules through the cell membrane from areas of low concentration to high concentration |
| amino acids | any one of several building blocks of protein |
| cell | the basic unit and structure and function that makes up all organisms |
| cell membrane | the thin boundary between the cell and it’s environment |
| cellular respiration | the process in which nutrients are broken apart, releasing the chemical energy stored in them |
| chloroplast | the green organelle that contains chlorophyll: where photosynthesis takes place |
| circulation | the flow of materials within a cell as well as between parts of a multicellular organism |
| cytoplasm | the jellylike substance that is between the cell membrane and the nucleus and that contains specialized structures |
| digestion | the process that breaks down large food molecules into simpler molecules that the organism can use |
| diffusion | the movement of molecules from areas of high concentration to areas of low concentration |
| enzymes | proteins that speed up the rate of chemical reactions in living things |
| excretion | the removal of all the wastes produced by the cells of the body |
| homeostasis | the ability of an organism to maintain a stable internal environment even when the external environment changes |
| hormone | a chemical produced in the endocrine glands |
| immunity | the body’s ability to destroy pathogens before they cause disease |
| inorganic | a type of molecule that does not contain both carbon and hydrogen but can contain any other combiantions of elements |
| metabolism | all the chemical reactions that occur within the cells of an organism |
| Mitochondria | pod-shaped organelles that contain enzymes used to extract energy from nutrients. |
| Nucleus | a large structure withina cell that controls the cells metabolism and stores genetic information, including chromosomes and DNA |
| organ | a body structure made of dfferent kinds of tissues combined to perform a specific function |
| Organ system | several organs that work together to perform a major function in the body. |
| Organelle | a structure within the cell that carries out a specific function |
| Organic | term used to describe molecules that contain both hydrogen and carbon. |
| Receptor molecule | certain protein molecule in the cell membrane that can receive |
| Respiration | the process by which chemical bond energy stored in nutrients is |
| Reproduction | the process by which organisms produce new organisms of the same type. |
| Ribosome | one of the tiny structures in the cell that is the site of protein production. |
| Simple sugars | the result of digested starches. |
| Synthesis | a life process that involves combining simple substances into more complex |
| Tissue | a group of specialized cells that perform a specific |
