Podcast
Questions and Answers
During which stage of cellular respiration is ATP directly required to facilitate the phosphorylation of glucose and its intermediates?
During which stage of cellular respiration is ATP directly required to facilitate the phosphorylation of glucose and its intermediates?
- Oxidative Phosphorylation
- Citric Acid Cycle
- Glycolysis (energy-investment phase) (correct)
- Electron Transport Chain
Which of the following statements accurately describes the role of NADH in the electron transport chain?
Which of the following statements accurately describes the role of NADH in the electron transport chain?
- NADH accepts electrons directly from oxygen.
- NADH facilitates the movement of ATP synthase.
- NADH directly phosphorylates ADP to produce ATP.
- NADH donates electrons and a hydrogen ion (H+) to the chain. (correct)
In the electron transport chain, what process is directly powered by the energy provided by electrons?
In the electron transport chain, what process is directly powered by the energy provided by electrons?
- Passive transport of $O_2$
- Active transport of $H^+$ ions (correct)
- Facilitated diffusion of $H^+$ ions
- ATP hydrolysis
What is the final electron acceptor in the electron transport chain?
What is the final electron acceptor in the electron transport chain?
Which of the following statements accurately describes the location of the citric acid cycle within a eukaryotic cell?
Which of the following statements accurately describes the location of the citric acid cycle within a eukaryotic cell?
What is the primary role of ATP synthase?
What is the primary role of ATP synthase?
Which of the following statements correctly relates a process to its location within the cell?
Which of the following statements correctly relates a process to its location within the cell?
During cellular respiration, energy is released from glucose through a series of controlled reactions. What type of reaction describes this process?
During cellular respiration, energy is released from glucose through a series of controlled reactions. What type of reaction describes this process?
Adenosine Triphosphate (ATP) is described as an energy-carrying molecule. How does ATP release energy that the cell can use to do work?
Adenosine Triphosphate (ATP) is described as an energy-carrying molecule. How does ATP release energy that the cell can use to do work?
Which process is directly associated with the movement of $H^+$ ions from an area of high concentration to an area of low concentration through ATP synthase?
Which process is directly associated with the movement of $H^+$ ions from an area of high concentration to an area of low concentration through ATP synthase?
Flashcards
Cellular Respiration
Cellular Respiration
The process by which energy is released from glucose in a catabolic reaction.
Stages of Aerobic Respiration
Stages of Aerobic Respiration
Glycolysis, Citric Acid Cycle, and Electron Transport Chain.
ATP (Adenosine Triphosphate)
ATP (Adenosine Triphosphate)
An energy-carrying molecule found in all cells. Energy is released when the bond between the 2nd and 3rd phosphate is broken.
Glycolysis
Glycolysis
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ATP in Glycolysis
ATP in Glycolysis
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Dehydrogenase Enzymes
Dehydrogenase Enzymes
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Citric Acid Cycle
Citric Acid Cycle
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Electron Transport Chain
Electron Transport Chain
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Chemiosmosis
Chemiosmosis
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Oxygen's role in Aerobic Respiration
Oxygen's role in Aerobic Respiration
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Study Notes
- Cellular respiration is the process by which energy is released from glucose in a catabolic reaction
- Aerobic respiration has three stages: glycolysis, citric acid cycle, and the electron transport chain
Adenosine Triphosphate (ATP)
- This is the energy-carrying molecule found in all cells.
- Energy is released when the bond between the 2nd and 3rd phosphate is broken, converting ATP to ADP + Pi (inorganic phosphate).
- Phosphorylation is the addition of a phosphate group.
Glycolysis
- Glycolysis is the breakdown of glucose to pyruvate in the cytoplasm
- ATP is required for the phosphorylation of glucose and intermediates during the energy-investment phase
- Dehydrogenase enzymes pass electrons and H+ to coenzyme NAD
Citric Acid Cycle
- This occurs in the matrix of the mitochondria.
- Enzyme-controlled reactions happen
- CO2, NAD, NADH, and intermediates are involved in the cycle.
Electron Transport Chain
- NADH donates a H+ and electrons.
- Electrons provide energy for H+ to move by active transport.
- H+ ions move from high to low concentration by diffusion through ATP synthase.
- ATP synthase aids energy production, converting ADP + Pi to ATP.
- Oxygen is the final electron/H+ acceptor.
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