Learning Objectives

Organisms get energy through:

• Cellular respiration

• Photosynthesis

• Fermentation

• All of the above

Cellular respiration is the process by which cells convert glucose and oxygen into ATP, carbon dioxide, and water.

• It converts glucose and oxygen into ATP, CO2, and water.

• It converts CO2 and water into glucose and oxygen.

• It converts sunlight into chemical energy.

• It converts ATP into glucose and oxygen.

Photosynthesis produces sugar and oxygen, while cellular respiration uses sugar and oxygen to produce energy, water, and carbon dioxide.

• They are interconnected; photosynthesis produces the substrates for cellular respiration, and respiration recycles the products of photosynthesis.

• They are completely independent processes.

• Photosynthesis takes place in the mitochondria, and cellular respiration occurs in chloroplasts.

• Both processes produce energy in the same way.

What is cellular respiration?

• A process of energy conversion that releases energy from food (glucose) in the presence of oxygen.

• A process of photosynthesis.

• A method of storing energy.

• A way to produce oxygen.

What is the word form of the cellular respiration equation?

• Oxygen + Glucose → Carbon Dioxide + Water + Energy

• Carbon Dioxide + Water → Oxygen + Glucose + Energy

• Water + Energy → Oxygen + Glucose + Carbon Dioxide

What is the chemical formula for cellular respiration?

• 6O2 + C6H12O6 → 6CO2 + 6H2O + Energy

• 6CO2 + 6H2O → 6O2 + C6H12O6 + Energy

• C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy

Fill in the blank: In the chemical formula for cellular respiration, 6O2 + C6H12O6 → ______ + 6H2O + Energy.

• 6CO2

• CO2

• C6O2

• 6O2

The first stage of cellular respiration is Glycolysis.

• Glycolysis

• Krebs Cycle

• Electron Transport Chain

• Fermentation

Second stage of cellular respiration is the Krebs Cycle.

• Glycolysis

• Krebs Cycle

• Electron Transport Chain

• Fermentation

The third stage of cellular respiration is the Electron Transport Chain.

• Glycolysis

• Krebs Cycle

• Electron Transport Chain

• Fermentation