Krebs Cycle

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 derived from carbohydrates, fats, and proteins.

Front

What are the main products of the Krebs Cycle for each acetyl-CoA?

Back

For each acetyl-CoA that enters the Krebs Cycle, the cycle produces 1 ATP, 3 NADH, and 1 FADH2.

Front

What is the role of Acetyl-CoA in the Krebs Cycle?

Back

Acetyl-CoA is the starting molecule that combines with a 4-carbon compound (oxaloacetate) to form citric acid, initiating the Krebs Cycle.

Front

What is the waste product of the Krebs Cycle?

Back

The waste product produced during the Krebs Cycle is Carbon Dioxide (CO2).

Front

Is the Krebs Cycle an aerobic or anaerobic process?

Back

The Krebs Cycle is an aerobic process, meaning it requires oxygen.

Front

What is the significance of NADH and FADH2 produced in the Krebs Cycle?

Back

NADH and FADH2 are electron carriers that transport electrons to the electron transport chain, where they are used to produce ATP.

Front

What happens to the carbon atoms in Acetyl-CoA during the Krebs Cycle?

Back

The carbon atoms in Acetyl-CoA are released as carbon dioxide (CO2) during the Krebs Cycle.

Front

What is citric acid?

Back

Citric acid is a 6-carbon compound formed in the Krebs Cycle when Acetyl-CoA combines with oxaloacetate.

Front

How many times does the Krebs Cycle turn for each glucose molecule?

Back

The Krebs Cycle turns twice for each glucose molecule, as one glucose molecule produces two acetyl-CoA molecules.

Front

What is the first step of the Krebs Cycle?

Back

The first step of the Krebs Cycle involves the combination of Acetyl-CoA with oxaloacetate to form citric acid.