CELLS Vocabulary

2. A cell is the smallest part of an organism. They are often not visible. They help to make people, animals, and plants.
3. Cell, An animal cell is one of the basic units of life. Within the cell are several organelles that help to perform a function.
5. Permeability, The idea that only a select few molecules can leave and exit a cell.
6. A multicellular cell uses two or more cells to make up an organism.
7. Theory, Cell theory was developed in the 1600s and has three basic principles: 1) a cell is the basic unit of life, 2) all cells come from pre-existing cells, and 3) all living things are made up of one or more cells.
11. Within diffusion, particles move from a higher concentrated area to a lower concentrated area over time.
13. Similar cells combined form tissue. The four major types of tissue are epithelial, connective, muscular, and nervous.
14. Cell, Plant cells form the basis of life for plants. They have similar cells to that of an animal cell, but they also have a cell wall and a chloroplast.
15. The cell membrane protects the cytoplasm of the cell.
17. Osmosis is the idea that water needs to pass through the cells. The water particles pass from a higher concentrated area to a lower concentrated area to achieve an equal level of water.
18. System, Organ systems are when select organs work together to perform a function. For example, organs like the lungs and teeth help to make up the respiratory system.

1. The nucleus is usually a big part of the cell because it controls activities and growth of the cell.
4. These organisms only have one cell, but can still perform basic functions, like moving, getting nutrients, and exchanging gas. An example would be an amoeba.
8. The microscope is a tool used to see tiny objects (which are often cells).
9. Organelles make up the insides of a cell. Each part of a cell has a job and a function, and the organelle is the name of that particular part of the cell (e.g., nucleus, mitochondria, cytoplasm, etc.)
10. Cytoplasm is a Jello-like solution that fills each cell.
12. Organisms can be any animal or plant cells, or any cell that exists on its own.
16. The powerhouse of the cell.
17. Organs are a build up of similar tissues that create an organ to perform a function in the body. For example, hearts, lungs, and eyes are all organs.