Cellular Respiration

Flashcards covering key concepts of cellular respiration, including stages, processes, and outcomes.

What is cellular respiration?

A multi-step metabolic pathway that disassembles organic molecules like glucose in a controlled manner to form ATP.

What are the four stages of cellular respiration?

Glycolysis, Intermediate stage, Krebs (Citric Acid Cycle), and Electron Transport Chain.

Where does glycolysis occur?

In the cytosol.

Is glycolysis aerobic or anaerobic?

Anaerobic.

What is the net ATP yield from glycolysis?

2 ATP.

What happens under sufficient oxygen conditions during cellular respiration?

All four stages occur, producing lots of ATP (about 30).

What happens under insufficient oxygen conditions?

Cellular respiration is skipped, and fermentation occurs, producing lactic acid.

What is produced at the end of glycolysis?

2 ATP and pyruvate.

What is the main output of the Krebs cycle?

4 carbon dioxide, 2 ATP, 8 NADH, and 2 FADH2.

What is the Electron Transport System (ETS)?

The stage of cellular respiration where oxidative phosphorylation occurs, creating a lot of ATP (about 32).

What enzyme creates ATP in the Electron Transport Chain?

ATP synthase.

What is another name for the Electron Transport Chain?

Oxidative phosphorylation.

Where do the Intermediate stage, Krebs Cycle, and Electron Transport Chain take place?

Inside the mitochondria.