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SCI-7 U8
All Words
| Question | Answer |
|---|---|
| cell | The smallest unit that can perform all life processes and contains all of the materials necessary for life. |
| stimulus | Anything in the environment that causes a response or change in an organism. |
| homeostasis | The process of an organism maintaining a constant and stable internal state in a changing environment. |
| metabolism | The total of all chemical activities that an organism performs. |
| proteins | One of the five chemical building blocks of cells that are used to build cells and cellular structures. |
| amino acids | The molecules that make up proteins. |
| carbohydrates | One of the five chemical building blocks of cells that are used as a source of energy and for energy storage. |
| simple carbohydrate | A carbohydrate made of one sugar molecule or a few linked sugar molecules. |
| complex carbohydrate | A carbohydrate made of hundreds of sugar molecules linked together. |
| lipids | One of the five chemical building blocks of cells that store energy and make up the cell membrane. |
| phospholipids | A special type of lipid that forms much of the cell membrane. |
| ATP | One of the five chemical building blocks of cells that the major energy-carrying molecules in the cell. |
| nucleic acids | One of the five chemical building blocks of cells that carry the genetic information of an organism. |
| nucleotides | The molecules that make up nucleic acids. |
| photosynthesis | The process by which plants make their own food (sugar) from carbon dioxide, water, and energy from sunlight. |
| chlorophyll | The green pigment in plants that absorbs light energy. |
| glucose | The sugar produced during photosynthesis. |
| cellular respiration | The process by which cells use oxygen to release energy from food. |
| cuticle | A waxy coating that protects the plant from water loss. |
| stoma | The opening in a leaf’s epidermis (outer layer) through which carbon dioxide and oxygen are exchanged. |
| guard cells | The “double doors” that open and close a stoma for gas exchange. |
| transpiration | The loss of water from the leaves of plants. |
| tropism | Plant growth in response to a stimulus. |
| phototropism | The process that occurs when plants grow towards light. |
| gravitropism | The process that occurs when plants grow shoots away from gravity (upwards). |
Created by:
susanmason
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