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Questions and Answers
What is energy?
Where does energy ultimately come from on Earth?
What process do plants use to make sugar and oxygen from carbon dioxide and water?
What type of reaction is photosynthesis?
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What do organisms use sugar as a source of?
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What is the primary source of energy needed to drive photosynthesis?
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What is the chemical that cells synthesize using the energy released from the breakdown of sugar?
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Why is cellular respiration necessary for life?
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In what way are photosynthesis and cellular respiration related?
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What is the usable form of energy that cells convert sugar into?
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Study Notes
Energy and Its Sources
- Energy is the ability to do work, and it ultimately comes from the sun on Earth.
Photosynthesis
- Plants use photosynthesis to make sugar and oxygen from carbon dioxide and water.
- Photosynthesis is a type of endothermic reaction, meaning it absorbs energy.
- The primary source of energy needed to drive photosynthesis is light energy from the sun.
Cellular Respiration
- Organisms use sugar as a source of energy for their cellular activities.
- Cells synthesize ATP (adenosine triphosphate) using the energy released from the breakdown of sugar.
- ATP is the usable form of energy that cells convert sugar into.
- Cellular respiration is necessary for life because it provides energy for the cell's various activities.
Relationship between Photosynthesis and Cellular Respiration
- Photosynthesis and cellular respiration are related in that they are complementary processes.
- Photosynthesis produces the sugar and oxygen that are then used by cellular respiration to produce energy.
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Description
Test your knowledge about the role of sugar as an energy source for living organisms. Explore the concept of energy and its importance for survival and reproduction in bacteria, plants, and animals. Understand the relationship between energy and work in daily activities.
