4.7 Cellular Respiration

Which of the following is a common energy currency in living cells that powers most living organisms?

• Sunlight

• Heat

• ATP

• Phosphate

How does ATP release energy that can be used by living cells?

• By being exposed to body heat

• By breaking a bond within an ATP molecule

• By being exposed to sunlight

• By adding more phosphate groups to itself

Where does cellular respiration occur?

• In the chloroplasts

• In the mitochondria

• In the nucleus

• In the airways of the respiratory system

Respiration is called aerobic because ________.

• it happens in the absence of oxygen

• it requires oxygen

• it requires carbon dioxide

• it happens in mitochondria

What are the main by-products of cellular respiration?

• Oxygen and sugars

• Sugars and water

• Water and carbon dioxide

• Carbon dioxide and oxygen

What is the main purpose of cellular respiration?

• To produce carbon dioxide

• To produce sugars

• To produce ATP

• To produce oxygen

Which molecule has a higher potential energy?

• ADP

• ATP

• ANP

• NADP+

What is the first step of cellular respiration?

• Krebs Cycle

• Electron Transport Chain

• Glycolysis

• Fermentation

What happens to the glucose molecule during cellular respiration?

• It is broken down into carbon dioxide and water

• It is converted into ATP

• It is stored for later use

• It is converted into oxygen