Podcast
Questions and Answers
What is the ultimate source of all energy on earth?
What is the ultimate source of all energy on earth?
- Wind energy
- Solar energy (correct)
- Geothermal energy
- Nuclear energy
Which type of organisms are capable of making their own food?
Which type of organisms are capable of making their own food?
- Autotrophs (correct)
- Chemotrophs
- Heterotrophs
- Saprophytes
What is the common energy currency of cells?
What is the common energy currency of cells?
- ADP-Pi
- ATP (correct)
- ADP
- AMP
When is energy released from ATP?
When is energy released from ATP?
What type of organisms live and feed on dead and decaying organisms?
What type of organisms live and feed on dead and decaying organisms?
What is the reversible breakdown of ATP to ADP called?
What is the reversible breakdown of ATP to ADP called?
What is the transfer of energy from one chemical reaction to another called?
What is the transfer of energy from one chemical reaction to another called?
Which type of reaction proceeds with a net release of free energy?
Which type of reaction proceeds with a net release of free energy?
What is the type of reaction that absorbs free energy from its surroundings?
What is the type of reaction that absorbs free energy from its surroundings?
What form does ATP have that can be used to power cellular processes or reactions?
What form does ATP have that can be used to power cellular processes or reactions?
Which type of reaction is directly linked with an energetically unfavorable reaction such as ATP regeneration?
Which type of reaction is directly linked with an energetically unfavorable reaction such as ATP regeneration?
What is the reversible breakdown of ATP to ADP called?
What is the reversible breakdown of ATP to ADP called?
Which form of ATP has energy that can be used to power cellular processes or reactions?
Which form of ATP has energy that can be used to power cellular processes or reactions?
What is the transfer of energy from one chemical reaction to another called?
What is the transfer of energy from one chemical reaction to another called?
Which type of chemical reaction proceeds with a net release of free energy?
Which type of chemical reaction proceeds with a net release of free energy?
Study Notes
Energy and Cells
- The ultimate source of all energy on Earth is the sun.
Organisms and Energy
- Autotrophic organisms, such as plants, are capable of making their own food.
Cellular Energy
- The common energy currency of cells is ATP (adenosine triphosphate).
- Energy is released from ATP when it is broken down to ADP (adenosine diphosphate).
- ATP has a high-energy phosphate bond that can be broken down to release energy.
Energetic Reactions
- Exergonic reactions proceed with a net release of free energy.
- Endergonic reactions absorb free energy from their surroundings.
- ATP hydrolysis, the breakdown of ATP to ADP, is an example of an exergonic reaction.
ATP and Energy Transfer
- ATP can be used to power cellular processes or reactions when it is in its high-energy state.
- The transfer of energy from one chemical reaction to another is called energy coupling.
- Energy coupling is often linked with an energetically unfavorable reaction, such as ATP regeneration.
ATP Breakdown
- The reversible breakdown of ATP to ADP is called ATP hydrolysis.
- ATP hydrolysis releases energy that can be used to power cellular processes or reactions.
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Description
Test your knowledge on the flow of energy in ecosystems with this quiz. Learn about autotrophs, heterotrophs, and saprophytes and how they obtain energy from the sun through different sources.
