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?

Back

Glycolysis occurs in the cytoplasm of the cell.

Front

What is the main product of glycolysis?

Back

The main product of glycolysis is 2 molecules of pyruvate, along with a net gain of 2 ATP and 2 NADH.

Front

What is the role of acetyl CoA in cellular respiration?

Back

Acetyl CoA is a key molecule that enters the Krebs Cycle after glycolysis, derived from pyruvate.

Front

What are the products of the Krebs Cycle?

Back

The products of the Krebs Cycle include ATP, 3 NADH, 1 FADH2, and 2 CO2 per acetyl CoA.

Front

Where does the Krebs Cycle occur?

Back

The Krebs Cycle occurs in the mitochondrial matrix.

Front

What is the function of the electron transport chain?

Back

The electron transport chain transfers electrons from NADH and FADH2 to oxygen, creating a proton gradient that drives ATP synthesis.

Front

Where does the electron transport chain occur?

Back

The electron transport chain occurs in the inner mitochondrial membrane (cristae).

Front

What is fermentation?

Back

Fermentation is an anaerobic process that allows for the production of ATP without oxygen, but it does not produce as much ATP as aerobic respiration.