4 Stages of Cellular Respiration

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Questions and Answers

What is the first stage of cellular respiration?

Oxidation
Glycolysis (correct)
Krebs Cycle
Electron Transport Chain

What process occurs during glycolysis?

Splitting sugars in cytoplasm, with 2 ATP molecules combining with glucose.

What is the second stage of cellular respiration?

Krebs Cycle
Electron Transport Chain
Oxidation (correct)
Glycolysis

What happens to pyruvates during the oxidation stage?

They are broken into water. Signup and view all the answers

What is the third stage of cellular respiration?

Krebs Cycle/Citric Acid Cycle (B) Signup and view all the answers

How many times does the Krebs Cycle repeat for every glucose molecule?

What is produced during the Krebs Cycle?

Both A and B (A) Signup and view all the answers

What is the fourth stage of cellular respiration?

Electron Transport Chain (D) Signup and view all the answers

What does the Electron Transport Chain produce?

32 ATP's Signup and view all the answers

Study Notes

Glycolysis

Occurs in the cytoplasm, begins the process of cellular respiration.
Involves the splitting of sugars, specifically glucose, to release energy.
Requires an energy investment of 2 ATP molecules to start the process.

Oxidation

Pyruvates generated from glycolysis are transported into the mitochondria.
Through oxidative processes, pyruvates are converted, resulting in the production of water.

Krebs Cycle / Citric Acid Cycle

Each glucose molecule leads to two complete cycles of the Krebs Cycle.
The cycle facilitates the breakdown of pyruvic acids into carbon dioxide.
During this stage, a total of 2 ATP molecules are released.

Electron Transport Chain

Located within the inner mitochondrial membrane, consists of membrane-bound carriers that transport electrons.
This stage is crucial for ATP production, yielding approximately 32 ATP molecules.
Operates through a series of redox reactions and is the final stage of cellular respiration.

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Test your knowledge on the four stages of cellular respiration with these flashcards. Each card covers key concepts such as Glycolysis, Oxidation, and the Krebs Cycle, helping you understand how glucose is processed to produce energy. Perfect for biology students looking to reinforce their learning.