Process of cellular Respiration 2024

What process follows glycolysis in the presence of oxygen?

• Fermentation

• Krebs cycle

• Lactic acid production

• Photosynthesis

Where does the Krebs cycle occur within the cell?

• Nucleus

• Mitochondrial matrix

• Endoplasmic reticulum

• Cytoplasm

What happens to pyruvate before entering the Krebs cycle?

• It combines with oxygen.

• It is converted to acetyl CoA.

• It is converted to lactic acid.

• It is broken down into carbon dioxide and water.

What is the significance of the mitochondrial matrix in cellular respiration?

• It stores excess ATP.

• It is the site of the Krebs cycle.

• It is where glycolysis occurs.

• It is where oxygen is produced.

What is the main product of the Krebs cycle that enters the electron transport chain?

• Glucose

• Oxygen

• NADH and FADH2

• Pyruvate

How many molecules of carbon dioxide are produced from one turn of the Krebs cycle?

• One

• Two

• Three

• Four

What is the main function of NADH and FADH2 in cellular respiration?

• To produce glucose

• To convert ADP to ATP directly

• To break down pyruvate

• To carry electrons to the electron transport chain

What role does oxygen play in aerobic respiration?

• It is used to break down glucose.

• It is split to form ATP directly.

• It acts as the final electron acceptor.

• It generates carbon dioxide.

Why is oxygen essential for aerobic respiration?

• It is the only source of energy for the cell.

• It breaks down glucose into pyruvate.

• It serves as the final electron acceptor in the electron transport chain.

• It directly synthesizes ATP.

What is the final electron acceptor in the electron transport chain?

• Oxygen

• Water

• Hydrogen

• Carbon dioxide