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.

Front

What are the main stages of cellular respiration?

Back

The main stages of cellular respiration are Glycolysis, the Krebs Cycle (Citric Acid Cycle), and the Electron Transport Chain.

Front

Where does glycolysis occur in the cell?

Back

Glycolysis occurs in the cytoplasm of the cell.

Front

What is the role of NADH in cellular respiration?

Back

NADH is an electron carrier that transports electrons to the electron transport chain, facilitating ATP production.

Front

What is the function of the Krebs Cycle?

Back

The Krebs Cycle processes acetyl CoA to produce NADH, FADH2, and ATP, and releases carbon dioxide as a waste product.

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?

Back

The proton gradient created by the electron transport chain is used by ATP synthase to produce ATP through chemiosmosis.

Front

What is the final electron acceptor in the electron transport chain?

Back

The final electron acceptor in the electron transport chain is oxygen, which combines with electrons and protons to form water.

Front

How many ATP molecules are produced from one glucose molecule during cellular respiration?

Back

Up to 38 ATP molecules can be produced from one glucose molecule during cellular respiration, depending on the efficiency of the process.

Front

What is fermentation?

Back

Fermentation is an anaerobic process that allows cells to produce energy without oxygen, resulting in products like lactic acid or ethanol.