cellular respiration

Why is cellular respiration essential for living organisms?

• It converts sunlight into energy.
• It helps in the formation of proteins.
• It provides energy necessary for cellular functions.
• It allows organisms to produce glucose.

Which of the following correctly describes the overall chemical equation for cellular respiration?

• Glucose + 6 Oxygen → 6 Carbon Dioxide + 6 Water + Energy
• Glucose + 2 Oxygen → 2 Carbon Dioxide + 2 Water + Energy
• Glucose + 3 Oxygen → 3 Carbon Dioxide + 3 Water + Energy
• Glucose + 4 Oxygen → 4 Carbon Dioxide + 4 Water + Energy

What is the primary function of glycolysis in cellular respiration?

• To convert pyruvate into carbon dioxide
• To synthesize glucose from carbon dioxide
• To generate oxygen for the Krebs Cycle
• To produce ATP and NADH from glucose

Which of the following stages of cellular respiration does not require oxygen?

• Electron Transport Chain
• Krebs Cycle
• Glycolysis
• All stages require oxygen

Which statement about glycolysis is true?

• It occurs in the mitochondria and requires oxygen.
• It occurs only in aerobic conditions.
• It produces a net gain of 2 ATP and 2 NADH.
• It is the final stage of cellular respiration.

Where does the Krebs Cycle take place within the cell?

• In the cytoplasm
• In the nucleus
• In the mitochondria
• In the cell membrane

What is produced during each turn of the Krebs Cycle?

• 1 NADH, 2 FADH₂, and 2 ATP
• 3 NADH, 1 FADH₂, and 1 ATP
• 1 NADH, 1 FADH₂, and 1 ATP
• 2 NADH, 2 FADH₂, and 2 ATP

What is the primary role of oxygen in cellular respiration?

• To act as the final electron acceptor in the Electron Transport Chain
• To produce glucose
• To generate carbon dioxide
• To facilitate glycolysis

How many ATP molecules can the Electron Transport Chain produce per glucose molecule?

• 2 ATP
• 10 ATP
• 38 ATP
• 34 ATP

What is the significance of the Electron Transport Chain in cellular respiration?

• It converts NADH into glucose.
• It is where glucose is broken down into pyruvate.
• It generates the majority of ATP during cellular respiration.
• It produces carbon dioxide as a waste product.