Photosynthesis and Cellular Respiration Diagram

Sure, here's a basic step-by-step breakdown of photosynthesis and cellular respiration:

Photosynthesis:

1. Light-dependent reactions: These occur in the thylakoid membrane of the chloroplasts. The light energy from the sun is absorbed by chlorophyll and other pigments. This energy is used to split water molecules into hydrogen and oxygen. The oxygen is released as a waste product, while the hydrogen is used in the next step.

2. Light-independent reactions (Calvin Cycle): These occur in the stroma of the chloroplasts. The hydrogen from the previous step, along with carbon dioxide from the atmosphere, is used to produce glucose and other sugars.

Cellular Respiration:

1. Glycolysis: This occurs in the cytoplasm. One molecule of glucose is broken down into two molecules of pyruvate. This process produces a small amount of ATP (the cell's energy currency) and NADH.

2. Krebs Cycle (Citric Acid Cycle): This occurs in the mitochondria. The pyruvate from glycolysis is further broken down, releasing carbon dioxide as a waste product. This process also produces ATP, NADH, and another molecule called FADH2.

3. Electron Transport Chain: This also occurs in the mitochondria. The NADH and FADH2 from the previous steps are used to create a large amount of ATP. Oxygen is required for this process, and water is produced as a waste product.

In summary, photosynthesis uses light energy to produce glucose and oxygen, while cellular respiration breaks down glucose to produce ATP, carbon dioxide, and water.