Cellular Respiration and Mitochondria

What is the primary function of mitochondria in cells?

• DNA replication

• Protein synthesis

• Energy conversion

• Lipid storage

What molecule is known as the cell's energy currency?

• NADH

• ATP

• FADH2

• Glucose

Which process does not require oxygen?

• Glycolysis

• Oxidative phosphorylation

• Electron transport chain

• Citric acid cycle

Where does glycolysis occur within the cell?

• Nucleus

• Mitochondria

• Endoplasmic reticulum

• Cytoplasm

What is the net gain of ATP from glycolysis?

• 2 ATP

• 30 ATP

• 4 ATP

• 1 ATP

What molecule enters the citric acid cycle?

• Pyruvate

• Glucose

• Oxaloacetate

• Acetyl-CoA

What is the main product of the citric acid cycle?

• Carbon dioxide

• Glucose

• ATP

• NADH

How many ATP molecules are produced from one glucose molecule through cellular respiration?

• About 100 ATP

• About 30 ATP

• About 10 ATP

• About 2 ATP

What role does oxygen play in cellular respiration?

• It is the final electron acceptor

• It starts the glycolysis process

• It produces ATP directly

• It breaks down glucose

What is the final product formed when protons and electrons pass through ATP synthase?

• Water

• Oxygen

• Carbon dioxide

• Glucose