click below
click below
Normal Size Small Size show me how
Living Environment
Topic 1: Similarities/ Differences among living cells
| Question | Answer |
|---|---|
| Cell | The basic unit of structure and function that makes up all organisms |
| Cell respiration | The process in which nutrients are broken apart, releasing the chemical energy stored in them |
| Synthesis | A life process that involved combining simple substances into more complex substances |
| Organelle | A structure within the cell that carries out a specific function |
| Ribosomes | Tiny structures in the cell that are the sites of protein production |
| Mitochondria | Pod-shaped organelles that contain enzymes used to extract energy from nutrients |
| enzymes | Proteins that speed up the rate or chemical reactions in living things |
| Chloloplasts | Green organelles that contain chlorophyll; where photosynthesis takes place |
| Cell membrane | The thin boundary between the cell and its environment |
| diffusion | The movement of molecules from areas of high concentration to areas of low concentration |
| Active transport | The process by which cells use energy to transport molecules through the cell membrane from areas of low concentration to areas of high concentration. |
| Amino acids | Any one of several building blocks of protein |
| Receptor molecules | Certain protein molecules in the cell membrane that can receive chemical messages from other cells |
| hormones | A chemical produced in the endocrine glands |