Cellular Respiration Flashcard

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 (Citric Acid Cycle), and the Electron Transport Chain.

Front

Where does the Krebs Cycle occur?

Back

The Krebs Cycle occurs in the mitochondrial matrix.

Front

What is glycolysis?

Back

Glycolysis is the first stage of cellular respiration that breaks down glucose into two molecules of pyruvate, producing a small amount of ATP and NADH.

Front

What is the role of NADH in cellular respiration?

Back

NADH acts as an electron carrier, transporting electrons to the electron transport chain.

Front

What is the net gain of ATP from glycolysis?

Back

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

Front

What is the function of isocitrate dehydrogenase?

Back

Isocitrate dehydrogenase is an enzyme that catalyzes the conversion of isocitrate to alpha-ketoglutarate in the Krebs Cycle.

Front

What is produced during the conversion of pyruvate to acetyl CoA?

Back

During the conversion of pyruvate to acetyl CoA, carbon dioxide is released and NADH is produced.

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 for ATP synthesis.

Front

What is oxidative phosphorylation?

Back

Oxidative phosphorylation is the process of ATP production that occurs in the electron transport chain, driven by the flow of protons back into the mitochondrial matrix.