12.19 Cellular Respiration Processes

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 three main stages of cellular respiration?

Back

The three main stages are glycolysis, the Krebs cycle, and the electron transport chain.

Front

What is glycolysis?

Back

Glycolysis is the first stage of cellular respiration where one molecule of glucose is broken down into two molecules of pyruvate, producing a small amount of ATP and NADH.

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

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 from NADH and FADH2 to oxygen, creating a proton gradient.

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 water and enabling ATP synthesis.

Front

What is ATP and why is it important?

Back

ATP (adenosine triphosphate) is the primary energy carrier in cells, providing energy for various cellular processes.

Front

What is the net gain of ATP from glycolysis?

Back

The net gain of ATP from glycolysis is 2 ATP molecules per molecule of glucose.

Front

What are the products of the Krebs cycle?

Back

The products of the Krebs cycle include ATP, NADH, FADH2, and carbon dioxide.

Front

What is lactic acid fermentation?

Back

Lactic acid fermentation is an anaerobic process that occurs when glucose is converted into energy and lactic acid, typically in muscle cells during intense exercise.