Questions and Answers
What are the reactants of photosynthesis?
water and carbon dioxide
Where does the oxygen released during photosynthesis come from?
water
Plant cells have only mitochondria.
False
How can global warming due to the greenhouse effect be moderated?
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How does carbon dioxide cause phenol red to turn yellow?
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What is the overall function of photopigments such as chlorophyll?
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Which color of light is least absorbed by the photopigments of plants?
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What is the ultimate source of all the food we eat and the oxygen we breathe?
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From what do photosynthetic organisms derive their carbon?
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How do plants use sugars?
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Study Notes
Photosynthesis Reactants and Products
- Reactants of photosynthesis are primarily water and carbon dioxide.
- The oxygen released during photosynthesis originates from water molecules.
Plant Cell Structure
- Plant cells contain both mitochondria and chloroplasts, essential for cellular respiration and photosynthesis respectively.
Environmental Impact
- Photosynthesis plays a role in moderating global warming by reducing carbon dioxide levels in the atmosphere.
Acidity and Phenol Red
- When carbon dioxide dissolves in water, it forms a weak acid, causing phenol red indicator to turn yellow.
Function of Photopigments
- Photopigments like chlorophyll absorb light energy, which is then converted into chemical energy for the plant.
Light Absorption
- Green light is the least absorbed by plant photopigments, which reflects its green color.
Source of Food and Oxygen
- The process of photosynthesis is the ultimate source of all food consumed and the oxygen present in the atmosphere.
Carbon Source for Plants
- Photosynthetic organisms, such as plants, obtain their carbon from carbon dioxide in the air.
Use of Sugars by Plants
- Plants utilize sugars as a fuel for cellular respiration and as a precursor for synthesizing various organic molecules.
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Description
This set of flashcards covers the key reactants and processes involved in photosynthesis. Learn about the role of water and carbon dioxide, the production of oxygen, and the significance of plant cells in this vital process. Perfect for biology students looking to reinforce their understanding of photosynthesis!
