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Questions and Answers
What molecule is characterized by having a long hydrophobic tail and a quinone head?
Which of the following correctly describes FAD?
Which of the following describes Iron-Sulfur Proteins?
What is a characteristic of NAD+?
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Which of the following terms is associated with the concept of electron carriers?
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What is the charge of an electron?
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What happens to the potential energy of a compound when an electron is removed?
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Which of the following compounds can act as an electron carrier?
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What is the role of reducing agents in chemical reactions?
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Which statement accurately describes the electron transport chain?
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What is most energy stored in atoms mainly represented by?
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What are the two nucleotides that make up NAD+?
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What is a compound that oxidizes another called?
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What is the main function of NAD+ during cellular respiration?
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Which molecule is lipid-soluble and acts as an electron carrier in the electron transport chain?
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Which of the following statements accurately describes the role of cytochromes?
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What component is primarily responsible for transferring electrons from NADH and FADH2 to the electron transport chain?
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What do Iron-Sulfur Proteins primarily participate in?
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During which process do electron carriers facilitate the generation of ATP?
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What is the structure of FAD (Flavin Adenine Dinucleotide)?
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What role do electron carriers play in the processes of cellular respiration and photosynthesis?
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Study Notes
Electron Carriers
- Electrons are subatomic particles with a negative charge.
- The removal of an electron from a molecule lowers its potential energy.
- Removing an electron from a molecule is called oxidation.
- Adding an electron to a molecule is called reduction.
- Electron carriers are responsible for transferring electrons within cells.
- Electron carriers are important for cellular respiration and photosynthesis.
Types of Electron Carriers:
- NAD+ (Nicotinamide Adenine Dinucleotide): consists of two nucleotides, adenine, and nicotinamide. Transfers electrons to the electron transport chain after being reduced to NADH.
- FAD (Flavin Adenine Dinucleotide): contains flavin, adenine, and ribose. Transfers electrons to the electron transport chain after being reduced to FADH2.
- Coenzyme Q (Ubiquinone): is lipid-soluble with a long hydrophobic tail and a quinone head. Transports electrons from NADH and FADH2 to the electron transport chain.
- Cytochromes: proteins with heme groups (containing iron atoms). Facilitate electron transfer within the electron transport chain.
- Iron-Sulfur Proteins: contain iron-sulfur clusters. Participate in electron transfer reactions within the electron transport chain.
Electron transport Chain
- A series of electron carriers embedded in the mitochondria's inner membrane.
- Transfers electrons from electron carriers to create ATP, the cell's energy currency.
- Is important for generating the ATP needed for cellular function.
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Description
Explore the crucial role of electron carriers in cellular respiration and photosynthesis. This quiz covers key types such as NAD+, FAD, and Coenzyme Q, along with their functions and significance. Test your knowledge on how these carriers facilitate electron transfer within cells.