Cellular Respiration Quiz

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Questions and Answers

What is the main purpose of ATP in cellular processes?

To synthesize proteins
To provide energy for cellular functions (correct)
To act as a genetic material
To repair damaged DNA

Which stages of cellular respiration produce ATP directly?

Glycolysis and Krebs Cycle (correct)
Krebs Cycle and Electron Transport Chain
Glycolysis and Acetyl CoA Conversion
Acetyl CoA Conversion and Electron Transport Chain

What is the net ATP yield from one molecule of glucose during glycolysis?

1 ATP
2 ATP (correct)
4 ATP
6 ATP

Which molecule is a product of the Krebs Cycle?

<p>NADH (D)</p> Signup and view all the answers

How many ATP are produced from NADH in the electron transport chain?

<p>2.5 ATP (A)</p> Signup and view all the answers

Flashcards

Cellular Respiration: What is it?

Cellular respiration is a process that converts glucose and oxygen into carbon dioxide, water, and energy in the form of ATP. This energy is essential for various cellular functions.

What is Glycolysis?

Glycolysis is the first stage of cellular respiration, where a glucose molecule (6 carbons) is broken down into two pyruvate molecules (3 carbons each). This process generates a small amount of ATP and NADH.

What happens in the Krebs Cycle?

The Krebs Cycle (also called the Citric Acid Cycle) is the third stage of cellular respiration, where Acetyl CoA molecules are broken down, generating CO2, ATP, NADH and FADH2.

What is the Electron Transport Chain?

The Electron Transport Chain (ETC) is the final stage of cellular respiration. It uses electrons from NADH and FADH2 to generate a large amount of ATP. It's the most efficient energy-producing step.

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How does the ETC make ATP?

The electron transport chain utilizes the stored energy within NADH and FADH2 to power proton pumps, generating a proton gradient. This potential energy is then used to produce ATP through ATP synthase.

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