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7th grade photo/resp
cellular respiration and photosynthesis
| Question | Answer |
|---|---|
| How do plants obtain energy | They trap energy from the sunlight |
| What are the reactants of photosynthesis | carbon dioxide and water, in the presence of light |
| what are the products of photosynthesis | glucose and oxygen |
| where does photosynthesis occur | in the chloroplasts |
| Why are there no chloroplasts in roots | roots are underground and not exposed to sunlight |
| Would you expect a plant to produce more oxygen on a cloudy day or a sunny day? | Sunny. Light is needed for photosynthesis |
| How does a plant obtain carbon dioxide | It comes in through the stomata on the underside of the leaf |
| what is glucose | a simple sugar |
| How does a plant obtain water | through the roots |
| What is the pigment in chloroplasts called | chlorophyll |
| Why is light not considered a reactant | It is not used or rearranged in the reaction. |
| What kind of organisms can do photosynthesis? | Only organisms like plants, some bacteria and some protists (algae) |
| Why are plants called producers | They are the only organisms that can make their own food |
| What would happen to the animals if the sun did not shine | animals would die because they are reliant on the sun to provide energy to plants to make food. |
| Who does cellular respiration | plants and animals |
| What is the purpose of respiration | to make energy for the cell |
| What part of a cell does respiration | mitochondria |
| Why would you expect to find more mitochondria in the heart than in the skin | The heart is a muscle that needs constant energy to keep beating |
| what are the reactants of respiration | oxygen and glucose |
| what are the products of respiration | water, carbon dioxide and energy |
| What is different about fermentation? | Fermentation doesn't require oxygen and it produces alcohol instead of water. |
| Explain how photosynthesis and cellular respiration are opposite processes | Photosynthesis requires the materials that respiration produces. Respiration requires the materials that photosynthesis produces. Photo. takes light energy to make food (glucose). Respiration takes food (glucose) to make chemical energy (ATP). |
Created by:
cheryl foley
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