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Cells
This study stack is to help you study for a test on Cells
| Question | Answer |
|---|---|
| What is the function of the cell wall? | helps to protect and support the cell |
| What does the cell membrane do for the cell? | controls what substances come into and out of the cell |
| Which cell has a cell wall, an animal cell or a plant cell? | plant cell |
| What is the "brain" of the cell | the nucleus |
| What is an organelle? | the tiny cell structures that carry out specific functions within the cell |
| What does mitochondria do for the cell? | converts energy in food molecules to energy the cell can use to carry out its function |
| Which part of a cell produces protein? | ribosomes |
| What is the function of chloroplasts? | takes energy from the sunlight and use it to produce food for the cell (photosynthesis) |
| What is the difference between a bacterial cell and a plant or animal cell? | does not contain a nucleus. |
| What is diffusion? | the main method by which small molecules move across the cell membrane |
| What causes diffusion? | collisions of molecules against each other cause them to push away from one another which, over time, cause the molecules will spread out until they are evenly distributed. |
| Give an analogy of diffusion. | students in a crowded hallway spread out when going through a bigger hallway |
| Give an analogy of a cell membrane | the walls of a castle are like a cell membrane because they protect the castle and the gatekeeper decides who to let in or out |
| What is osmosis? | the diffusion of water molecules through a selectively permeable membrane |
| Why does osmosis occur? | because cells cannot function properly without adequate water and many cellular processes depend on it |
| What process took place when we put the food coloring into the water for our egg experiment? | diffusion |
| What process took place when the egg sat in the water with food coloring? | osmosis |
| How is osmosis related to diffusion? | it is the process by which small molecules move from an area of higher concentration to an area of lower concentration. versus the diffusion of water molecules through a selectively permeable membrane |
| Give an analogy of photosynthesis | solar panels, because they take energy from the sun and turn it into energy we can use. |
| What is active transport? | the movement of materials through a cell membrane using cellular energy; it requires the cell to use its own energy |
| What is passive transport? | is the movement of dissolved materials through a cell membrane without using cellular energy |
Created by:
lonniewood
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