Concepts | Questions | Media Resources |
6.1 Cells and the Flow of Energy
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- Energy cannot be created nor destroyed; energy can be changed from one form to another but there is always a loss of usable energy.
| - What are the first and second Laws of Thermodynamics?
Answer - How do the Laws of Thermodynamics apply to living organisms?
Answer
| Essential Study Partner
Summaries of major points:- Energy
- Two laws of thermodynamics
- Entropy
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6.2 Metabolic Reactions and Energy Transformations
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- The breakdown of ATP, which releases energy, can be coupled to reactions that require an input of energy.
- ATP goes through a cycle; energy from glucose breakdown drives ATP buildup and then ATP breakdown provides energy for cellular work.
| - The sum of all reactions occurring in a cell is called _________________.
Answer - What is the difference between endergonic and exergonic reactions and what is the role of ATP between them?
Answer - What type of macromolecule is ATP?
Answer - What is the makeup of ATP?
Answer - List and explain the three kinds of work performed by ATP.
Answer
| Essential Study Partner
Summaries of major points:- Metabolism
- Coupled reactions
- ATP: Energy for Cells
- Function of ATP
- Structure of ATP
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6.3 Metabolic Pathways and Enzymes
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- Cells have metabolic pathways in which every reaction has a specific enzyme.
- Enzymes speed reactions because they have an active site where a specific reaction occurs.
- Environmental factors like temperature and pH affect the activity of enzymes.
- Inhibition of enzymes is a common way for cells to control enzyme activity.
| - What is the energy of activation of a reaction and how is it affected by an enzyme?
Answer - The position on an enzyme where substrates bind and react is _________________.
Answer - What happens to an enzyme that is denatured?
Answer - What is the difference between enzyme cofactors and coenzymes and what is their function?
Answer
| Essential Study Partner
Summaries of major points:- Reactions in cells are orderly
- Energy of activation
- Enzyme-substrate complexes
- Factors affecting enzymatic speed
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6.4 Oxidation-Reduction and the Flow of Energy
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- Photosynthesis and cellular respiration are metabolic pathways that include oxidation-reduction reactions. Thereby energy becomes available to living things.
| - ________________ is when a molecule gains electrons and __________________ is when a molecule looses electrons.
Answer - The general photosynthetic reaction is carbon dioxide + _____________ + energy ® glucose + _____________.
Answer - What is the relationship between the general reactions of photosynthesis and respiration?
Answer - In which organelles do photosynthesis and respiration occur?
Answer - The electron transport system functions in both photosynthesis and respiration to do what?
Answer
| Summaries of major points:- Oxidation-Reduction
- Photosynthesis
- Cellular respiration
- Electron transport system
- ATP production
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