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Cells and Organs
terms for section 1, chapter 1 of the Human Biology book
| Question | Answer |
|---|---|
| The basic unit of structure and function in a living thing. | cells |
| Forms the outside boundary of the cell | cell membrane |
| The function of cells | grow, reproduce, and get of waste |
| The level of organization in the human body | cells, tissue, organs, and organ systems |
| A group of similar cells that perform the same function | tissue |
| the cells doubles in size, divides To form two new cells. This process leads to an increase of cells in multi-cellular organisms. | cell division |
| Nutrients that enter are cells are broken down into this size. | microscopic |
| cells contain these structures that perform special functions for the cell. | organelles |
| cells that have a specific function that only they can perform. These cells are more efficient and are needed for all life processes | specialized cells |
| A structure that is composed of different tissue | organ |
| A group of organs that work together to perform a major function | organ systems |
| All organisms are composed of at least one cell. | Schwann's idea for the cell theory. |
| All living things are composed of cells, cells are the basic unit of structure and function in living things, and all cells reproduced from other cells. | Cell Theory |
| Organisms that have multiple cells. Example plants and humans | multi-cellular organisms |
| Organisms that have only one cell. Example bacteria | single-celled organisms |
| substance is moved from an area of higher concentrate to an area of lower concentrate. Oxygen is moved this way. | diffusion |
| Substances that are not allowed into the cell. | salt and large molecules |
| Substances that are allowed into or out of the cell. | oxygen, water, carbon dioxide. |
| Movement of water into and out of the cells. | Osmosis |
| Movement of materials from an area of low concentrate to an area of high concentrate. | Active transport |
| One of the first scientist to observe cells. | Hooke |
| Final level of organization in the level of our bodies | organism |
| All cells in humans whether they are a red blood cell or a brain cell have the following thing in common | take in energy |
| Root cells of plants take in minerals from the soil by spending energy. The plant will continue to absorb minerals from the soil. Which reason best explains why root cells need to spend energy in order to transport some minerals into cells? | Mineral concentration is higher in root cells than in the surrounding soil. (Active transport) |
| The classification of some organisms has changed. Which new process is used to reclassify organisms? | Structures are now examined at the molecular level. |
| Animal cells get their energy by | absorbing nutrients. |
| How do plants and animals process nutrients similarly? | Cells break down nutrients into usable forms. |
Created by:
crumsey
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