Pyruvate Oxidation and Krebs

Front

What is the 'regenerator' of the Krebs Cycle?

Back

Oxaloacetate is the 'regenerator' of the Krebs Cycle, as it combines with Acetyl-CoA to form citrate, allowing the cycle to continue.

Front

What happens to pyruvate before it enters the Krebs Cycle?

Back

Before entering the Krebs Cycle, pyruvate is oxidized to form Acetyl-CoA.

Front

Where does the Krebs Cycle take place?

Back

The Krebs Cycle takes place in the mitochondrial matrix.

Front

What are the folds in the mitochondrion called?

Back

The folds in the mitochondrion are called cristae.

Front

What is the innermost interior of the mitochondrion called?

Back

The innermost interior of the mitochondrion is called the matrix.

Front

What is the primary function of the Krebs Cycle?

Back

The primary function of the Krebs Cycle is to generate energy through the oxidation of Acetyl-CoA, producing NADH and FADH2.

Front

What are the main products of one turn of the Krebs Cycle?

Back

One turn of the Krebs Cycle produces 3 NADH, 1 FADH2, and 1 ATP (or GTP), along with carbon dioxide.

Front

How is Acetyl-CoA formed from pyruvate?

Back

Acetyl-CoA is formed from pyruvate through a process called decarboxylation, where a carbon atom is removed as carbon dioxide.

Front

What role do NADH and FADH2 play in cellular respiration?

Back

NADH and FADH2 serve as electron carriers that transport electrons to the electron transport chain, where ATP is produced.

Front

What is the significance of the electron transport chain in cellular respiration?

Back

The electron transport chain is significant because it generates the majority of ATP during cellular respiration through oxidative phosphorylation.