AP BIOLOGY

Detailed explanation-1: -During photosynthesis, chlorophyll absorbs energy from blue-and red-light waves, and reflects green-light waves, making the plant appear green. While there are many steps behind the process of photosynthesis, it can be broken down into two major stages: light-dependent reactions and light-independent reactions.

Detailed explanation-2: -Photosynthesis absorbs energy from sunlight to build carbohydrates in the chloroplasts, and aerobic cellular respiration releases that stored energy by using oxygen to break down carbohydrates. Both organelles use electron transport chains to generate the energy necessary to drive other reactions.

Detailed explanation-3: -So yes, photosynthesis is an endothermic reaction. Photosynthesis is an endothermic reaction because it takes energy. The source of this energy is light, specifically sunlight. The sun’s electromagnetic energy is converted into chemical energy, which is then stored in chemical bonds in the plant.

Detailed explanation-4: -The energy from light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas. After the sugar is produced, it is then broken down by the mitochondria into energy that can be used for growth and repair.