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Cell 2013
Cell topics
| Question | Answer |
|---|---|
| Do cells need nourishment (food)like an organism does? | yes cells perform life processes |
| Do cells create waste like an organism? | yes cells perform life processes |
| Why do plants need turgor pressure? | Plants do not have a skeleton for support. This keeps the plant upright. |
| If a plant wilts, what does this mean is happening inside the cells? | The plant has decreased turgor pressure. The water in the cell is lower so the support is decreased. |
| Plant cells and animal cells have 2 differences in the organelles. What are they? | Plant cells have chloroplasts and a cell wall. Animal cells do not. |
| A flower arrangement begins to die or wilt. What is the problem? | The cells have lost turgor pressure. |
| Water moves in and out of cells. What is this called? | osmosis |
| What controls water entering and leaving a cell? | cell membrane |
| Plant and animal cells have vacuoles. What is the main difference between them? | Plants have a larger vacuole to hold water for high turgor pressure |
| All organisms want to be at _____. | equilibrium |
| The natural world wants to maintain equilibrium. One feedback mechanism to maintain this is called ____ | Homeostasis |
| Eating food that is spoiled will result in stomach distress like vomiting. Identify the stimulus and the response. | Eating the food is the stimulus. Vomiting is the response. |
| Vomiting or fever are examples of the body trying to maintain ______ | equilibrium |
| What is the process that turns radiant energy (energy from the sun) into chemical energy? | photosynthesis |
| What type of organism performs photosynthesis? | plants |
| What organelle is involved directly in photosynthesis? | chloroplasts |
| What is the substance inside a chloroplast? | Chlorophyll |
| Plants perform photosynthesis because they are what type of organism? | autotroph |
| Organisms that must eat their food are what type of organism? | heterotroph |
| The plant kingdom only contains what type of organism? Heterotrophs or autotrophs? | autotrophs |
| Why is a venus fly-trap called an autotroph and not a heterotroph if it eats insects? | Fly-traps main source of energy is photosynthesis. Eating insects is only necessary when the soil is missing nutrients like nitrogen. |
| What does xylem carry in a plant? | water |
| What does phloem carry in a plant? | food |
Created by:
sabercats
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