AP Bio Insta-Review Topic 3.6*: Cellular Respiration

Front

What is cellular respiration?

Back

Cellular respiration is the process by which cells convert glucose and oxygen into energy (ATP), carbon dioxide, and water.

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What are the main stages of cellular respiration?

Back

The main stages of cellular respiration are Glycolysis, the Krebs Cycle (Citric Acid Cycle), and Oxidative Phosphorylation.

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Where does glycolysis occur?

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Glycolysis occurs in the cytosol of the cell.

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What is the role of the mitochondria in cellular respiration?

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Mitochondria are the organelles where the Krebs Cycle and Oxidative Phosphorylation take place, producing ATP.

Front

What is the electron transport chain?

Back

The electron transport chain is a series of protein complexes in the inner mitochondrial membrane that transfer electrons and pump protons to create a proton gradient.

Front

What is the significance of the proton gradient in cellular respiration?

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The proton gradient created by the electron transport chain is used by ATP synthase to produce ATP during oxidative phosphorylation.

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What is glycolysis?

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Glycolysis is the first step of cellular respiration that breaks down glucose into two molecules of pyruvate, producing a small amount of ATP and NADH.

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What is the Krebs Cycle?

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The Krebs Cycle, also known as the Citric Acid Cycle, is a series of chemical reactions that further breaks down pyruvate into carbon dioxide, generating ATP, NADH, and FADH2.

Front

What is oxidative phosphorylation?

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Oxidative phosphorylation is the final stage of cellular respiration where ATP is produced using the energy from the electron transport chain and the proton gradient.

Front

What is anaerobic respiration?

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Anaerobic respiration is a type of respiration that occurs without oxygen, producing less energy than aerobic respiration.