Term | Definition |
Active Transport | process by which cells use energy to transport molecules through the cell membrane from areas of low to high concentration; requires energy (ATP) |
Amino Acids | building blocks of protein |
Cell | basic unit of structure and function that makes up all organisms |
Cell Membrane | thin boundary between the cell and its environment |
Cell Respiration | process in which nutrients are broken apart; release chemical energy |
Chloroplast | green organelle that contains chlorophyll; photosynthesis takes place here |
Circulation | flow of materials within a cell and between parts of organisms |
Cytoplasm | jellylike substance that is between the cell membrane; contains specialized structures |
Diffusion | movement of molecule from area of high to low concentration |
Digestion | process that breaks down large food molecules into simpler molecules that organism can use |
Enzymes | proteins that speed up the rate of chemical reactions |
Excretion | the removal of all the wastes produced by the cell |
Homeostasis | maintain a stable internal environment |
Hormone | chemical produced by in the endocrine glands |
Immunity | body's ability to destroy pathogens before they cause disease |
Inorganic | does not contain both carbon and hydrogen |
Metabolism | all chemical reactions that occur within the cells of an organism |
Mitochondria | powerhouse for the cell; provides energy |
Nucleus | contains genetic information, including chromosomes and DNA |
Organ | body structure made of different 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 | contain both hydrogen and carbon |
Receptor Molecule | certain protein molecules in the cell membrane that can receive chemical messages from other cells; shape specific (match shapes) |
Respiration | process by which the chemical bond energy stored in nutrients is released for use in cells |
Reproduction | process by which organisms produce new organisms of same type |
Ribosome | make proteins |
Simple Sugars | result of digested starches |
Synthesis | life process that involves combining simple substances into more complex substances |
Tissue | a group of specialized cells that perform a specific function |
Vacuole | storage sacs of the cell |