Podcast
Questions and Answers
What is the primary reason that cellular respiration is necessary for life?
What is the primary reason that cellular respiration is necessary for life?
- ATP is less efficient than using sugar directly.
- Cells can use sugar directly for energy.
- Cellular respiration produces sugars from ATP.
- Sugar is converted into ATP, which cells can use for work. (correct)
What is the primary function of energy for living organisms?
What is the primary function of energy for living organisms?
- To reproduce offspring
- To store nutrients
- To perform work necessary for survival (correct)
- To regulate body temperature
How are photosynthesis and cellular respiration related?
How are photosynthesis and cellular respiration related?
- They both store energy in the form of sugar.
- The products of one process serve as the reactants for the other. (correct)
- Photosynthesis removes oxygen that cellular respiration requires.
- They occur in the same organelles within cells.
Which process do plants utilize to make sugar and oxygen?
Which process do plants utilize to make sugar and oxygen?
In the analogy comparing energy to money, what does ATP represent?
In the analogy comparing energy to money, what does ATP represent?
What type of reaction is photosynthesis classified as?
What type of reaction is photosynthesis classified as?
What type of energy source must be converted before it can be used by cells?
What type of energy source must be converted before it can be used by cells?
What is the end product of cellular respiration obtained from the breakdown of sugar?
What is the end product of cellular respiration obtained from the breakdown of sugar?
What role does ATP play in muscle contraction?
What role does ATP play in muscle contraction?
Which statement about cellular respiration is accurate?
Which statement about cellular respiration is accurate?
What do organisms convert sugar into during cellular respiration?
What do organisms convert sugar into during cellular respiration?
Where does the energy that plants use to make sugar ultimately come from?
Where does the energy that plants use to make sugar ultimately come from?
Why can't cells use sugar directly for work?
Why can't cells use sugar directly for work?
Which term describes the process of converting sugar into a form of energy that cells can use?
Which term describes the process of converting sugar into a form of energy that cells can use?
Which statement accurately describes energy in the context of living organisms?
Which statement accurately describes energy in the context of living organisms?
Flashcards
Energy
Energy
The ability to do work, where work is done when a force moves an object.
Photosynthesis
Photosynthesis
The process where plants use sunlight to make sugar and oxygen from carbon dioxide and water.
Endergonic Reaction
Endergonic Reaction
A reaction that requires energy to proceed. Energy is added to the process.
Sugar (as energy source)
Sugar (as energy source)
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Cellular Respiration
Cellular Respiration
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ATP
ATP
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Exergonic Reaction
Exergonic Reaction
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Organisms' Energy Needs
Organisms' Energy Needs
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Cellular Respiration
Cellular Respiration
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Photosynthesis & Respiration
Photosynthesis & Respiration
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ATP
ATP
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Sugar as energy source
Sugar as energy source
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Cellular work example
Cellular work example
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ATP's necessity
ATP's necessity
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Energy Conversion
Energy Conversion
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Study Notes
Energy and Life
- All living things need energy for survival and reproduction.
- Energy is the ability to do work.
- Earth's energy ultimately comes from the sun.
- Plants use sunlight to make sugar (photosynthesis).
Photosynthesis
- Plants use sunlight to convert carbon dioxide and water into sugar and oxygen.
- Photosynthesis is an endergonic reaction (requires energy).
- Energy from sunlight is stored in the sugar molecule.
Cellular Respiration
- Organisms break down sugar to release stored energy.
- This energy is used to make ATP (adenosine triphosphate).
- Cellular respiration is an exergonic reaction (releases energy).
- Sugar and oxygen are reactants, carbon dioxide and water are products.
ATP and Work
- Cells can't directly use sugar for work.
- Sugar must be converted into a usable form: ATP.
- ATP is used for cellular work, like muscle contraction.
- Cellular respiration is necessary for life because it provides a usable form of energy: ATP.
Relationships Between Photosynthesis and Cellular Respiration
- Cellular respiration is the reverse of photosynthesis.
- The products of one process become the reactants of the other.
- Photosynthesis and cellular respiration are interdependent.
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