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Cells (Chapter 7)
Question | Answer |
---|---|
Cell Theory | 1.) Cells are the basic unit of structure and function in all living things 2.) All living things are made up of cells. 3.)New cells are produced from existing cells |
Facilitated Diffusion | in which molecules that cannot directly diffuse across the membrane pass through special protein channels. |
Diffusion | The process by which particles move from an area of high concentration to low concentration. |
Isotonic | the two solutions are the ''same strength'' |
Hypertonic | they have a more concentrated sugar on the right side of the tube. |
Hypotonic | they have a ''below strength'' compared to the right side |
Osmotic Pressure | the net movement of water out or into the cell produces a force. |
Homeostatis | relatively constant internal physical and chemical conditions. |
Tissue | a group of similar cells that perform particular function |
Organ System | a group of organs that work together to perform a specific function |
Receptor | to respond to chemical signals, must have one |
Nucleus | - Contains and protects DNA - Surrounded by a double membrane |