Photosynthesis and Cellular Respiration Concepts

The video discusses whether photosynthesis and cellular respiration are endothermic or exothermic reactions. Photosynthesis is endothermic as it absorbs light energy to produce glucose and oxygen, storing energy in chemical bonds. In contrast, cellular respiration is exothermic, releasing energy by breaking down glucose with oxygen to produce carbon dioxide and water. The video concludes by summarizing these energy processes.

What type of reaction is photosynthesis?

• Combustion

• Neutral

• Endothermic

• Exothermic

In photosynthesis, what do plants use to create glucose and oxygen?

• Carbon dioxide and water

• Oxygen and glucose

• Nitrogen and water

• Carbon monoxide and hydrogen

What is the main source of energy for photosynthesis?

• Chemical energy

• Light energy

• Heat energy

• Mechanical energy

What is the opposite process of photosynthesis?

• Fermentation

• Photosynthesis

• Glycolysis

• Cellular respiration

During cellular respiration, what is released as a byproduct?

• Energy

• Nitrogen

• Oxygen

• Glucose

What happens to the energy stored in chemical bonds during cellular respiration?

• It is absorbed

• It is neutralized

• It is stored

• It is released

Which of the following is a product of cellular respiration?

• Light energy

• Carbon dioxide

• Glucose

• Chlorophyll

Why is photosynthesis considered an endothermic reaction?

• Because it involves combustion

• Because it is a neutral process

• Because it absorbs energy

• Because it releases energy