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Questions and Answers
What is the primary function of cellular respiration in cells?
What is the primary function of cellular respiration in cells?
- To regulate cell growth
- To respond to hormonal signals
- To synthesize proteins
- To convert glucose into energy in the form of ATP (correct)
In which part of the cell does cellular respiration take place?
In which part of the cell does cellular respiration take place?
- Mitochondria (correct)
- Endoplasmic reticulum
- Golgi apparatus
- Nucleus
What is the net ATP yield from the complete breakdown of one glucose molecule?
What is the net ATP yield from the complete breakdown of one glucose molecule?
- 40-42 ATP
- 24-26 ATP
- 20-22 ATP
- 36-38 ATP (correct)
Which stage of cellular respiration produces the most ATP?
Which stage of cellular respiration produces the most ATP?
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What is the byproduct of the Citric Acid Cycle that enters the Electron Transport Chain?
What is the byproduct of the Citric Acid Cycle that enters the Electron Transport Chain?
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What is the essential function of cellular respiration in living organisms?
What is the essential function of cellular respiration in living organisms?
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Study Notes
Overview of Cellular Respiration
- Cellular respiration is the process by which cells convert glucose into energy in the form of ATP (adenosine triphosphate)
- It is a vital function that occurs in the mitochondria of cells
Stages of Cellular Respiration
- Glycolysis: conversion of glucose into pyruvate, producing 2 ATP and 2 NADH
- Citric Acid Cycle (Krebs Cycle): conversion of pyruvate into Acetyl-CoA, producing 2 ATP, 6 NADH, and 2 FADH2
- Electron Transport Chain: transfer of electrons from NADH and FADH2 to oxygen, producing 32-34 ATP
- Oxidative Phosphorylation: generation of ATP using energy from the electron transport chain
ATP Yield
- Total ATP yield from complete breakdown of one glucose molecule: 36-38 ATP
- Glycolysis: 2 ATP
- Citric Acid Cycle: 2 ATP
- Electron Transport Chain: 32-34 ATP
Importance of Cellular Respiration
- Provides energy for cellular activities such as muscle contraction, nerve impulses, and cell division
- Essential for the survival of all living organisms
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