AP Biology - 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 is the overall equation for cellular respiration?

Back

C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP

Front

What is glycolysis?

Back

Glycolysis is the first step in cellular respiration where glucose is broken down into pyruvate, producing a small amount of ATP and NADH.

Front

Where does glycolysis occur?

Back

Glycolysis occurs in the cytoplasm of the cell.

Front

What is the Krebs cycle?

Back

The Krebs cycle, also known as the citric acid cycle, is a series of chemical reactions used by all aerobic organisms to generate energy through the oxidation of acetyl-CoA.

Front

Where does the Krebs cycle take place?

Back

The Krebs cycle occurs in the mitochondria of the cell.

Front

What is the electron transport chain?

Back

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

Front

What is fermentation?

Back

Fermentation is an anaerobic process that allows for the regeneration of NAD+ from NADH, enabling glycolysis to continue in the absence of oxygen.

Front

What is the main purpose of fermentation?

Back

The main purpose of fermentation is to replenish NAD+ for glycolysis.

Front

What is the role of oxygen in cellular respiration?

Back

Oxygen acts as the final electron acceptor in the electron transport chain, allowing for the production of ATP.