To solve the problem of labeling the diagram for cellular respiration, we need to understand the key stages and components involved in this process. Cellular respiration is a series of metabolic reactions that convert glucose into energy (ATP) using oxygen. The main stages are glycolysis, the Krebs cycle (also known as the citric acid cycle), and the electron transport chain.
Step-by-Step Solution:
#### 1.
Identify the Stages and Components:
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Glucose: The starting molecule in cellular respiration.
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Krebs Cycle: Occurs in the mitochondria and produces ATP, NADH, and FADH₂.
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Electron Transport Chain: Located in the inner mitochondrial membrane; uses NADH and FADH₂ to produce a large amount of ATP.
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Cytoplasm: Where glycolysis occurs.
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Mitochondrion: Where the Krebs cycle and electron transport chain occur.
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Oxygen: Final electron acceptor in the electron transport chain.
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Carbon Dioxide: Produced during the Krebs cycle.
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Water: Produced at the end of the electron transport chain.
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ATP: Energy currency produced throughout the process.
#### 2.
Label the Diagram:
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5. Cytoplasm: Glycolysis occurs here, breaking down glucose into pyruvate.
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6. Mitochondrion: The site of the Krebs cycle and electron transport chain.
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7. Oxygen: Final electron acceptor in the electron transport chain.
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4. Carbon Dioxide: Produced during the Krebs cycle.
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3. 32 ATP: The majority of ATP is produced during the electron transport chain.
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2. 2 ATP: A small amount of ATP is produced during glycolysis.
Final Labels:
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5. Cytoplasm
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6. Mitochondrion
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7. Oxygen
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4. Carbon Dioxide
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3. 32 ATP
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2. 2 ATP
Explanation:
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Glycolysis (in the cytoplasm): Glucose is broken down into two pyruvate molecules, producing a net gain of 2 ATP.
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Krebs Cycle (in the mitochondrion): Pyruvate is further broken down, producing carbon dioxide, NADH, and FADH₂, along with a small amount of ATP.
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Electron Transport Chain (in the mitochondrion): NADH and FADH₂ donate electrons, which pass through protein complexes, generating a proton gradient. This gradient drives the synthesis of a large amount of ATP (about 32 ATP per glucose molecule).
Final Answer:
\[
\boxed{
\begin{array}{c}
5. \text{Cytoplasm} \\
6. \text{Mitochondrion} \\
7. \text{Oxygen} \\
4. \text{Carbon Dioxide} \\
3. \text{32 ATP} \\
2. \text{2 ATP}
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of cellular respiration diagram worksheet.
