Cellular Respiration

These flashcards cover key concepts and processes related to cellular respiration, including glycolysis, the Krebs cycle, and electron transport.

What is the energy currency in cells?

ATP (Adenosine Triphosphate)

What process converts organic compounds into energy?

Cellular respiration.

What are the three pathways generating ATP from food?

Aerobic Cellular Respiration, Anaerobic Respiration, and Fermentation.

Overall equation of aerobic respiration?

C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + 36 ATP.

What does glycolysis break down glucose into?

Two 3-carbon pyruvate molecules.

What is produced during glycolysis?

2 NADH and 2 ATP.

What is the purpose of the Krebs Cycle?

To produce ATP and high-energy electron carriers.

What enters the Krebs cycle after glycolysis?

Acetyl CoA.

What is the role of the electron transport chain?

To transmit energy-rich electrons and produce ATP via chemiosmosis.

What is the maximum theoretical yield of ATP from one glucose molecule?

36 ATP.

What are the two types of fermentation?

Alcoholic fermentation and Lactic acid fermentation.

Where does glycolysis occur in the cell?

In the cytosol.

What is the final electron acceptor in anaerobic respiration?

Something other than O2, such as nitrate or sulfate?

What enzyme catalyzes the conversion of glucose to glucose-6-phosphate in glycolysis?

Hexokinase.

What occurs during the transition step following glycolysis?

Pyruvate is oxidized to Acetyl CoA.

Which complex in the electron transport chain oxidizes O2 to H2O?

Complex IV: Cytochrome c oxidase.