Cellular Respiration Review

Front

What is cellular respiration?

Back

Cellular respiration is the process by which cells convert carbon-based molecules from food and oxygen into ATP (adenosine triphosphate), the energy currency of the cell.

Front

Which organisms perform cellular respiration?

Back

Both autotrophs and heterotrophs perform cellular respiration.

Front

What are the main stages of cellular respiration?

Back

The main stages of cellular respiration are glycolysis, the Krebs cycle, and the electron transport chain.

Front

What is glycolysis?

Back

Glycolysis is the first stage of cellular respiration that occurs in the cytoplasm, breaking down glucose into pyruvate and producing a net gain of 2 ATP.

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 the final stage of cellular respiration, occurring in the inner mitochondrial membrane, where electrons are transferred through a series of proteins to produce ATP.

Front

What is the net gain of ATP from glycolysis?

Back

The net gain of ATP from glycolysis is 2 ATP.

Front

What happens to the Krebs cycle if oxygen is not present?

Back

If oxygen is not present, the Krebs cycle cannot occur, as it is an aerobic process.

Front

What is fermentation?

Back

Fermentation is an anaerobic process that allows for the production of ATP without oxygen, often resulting in byproducts like lactic acid or ethanol.

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.