NADP, or Nicotinamide Adenine Dinucleotide Phosphate, is a coenzyme found in all living cells. It plays a crucial role in various biochemical reactions, particularly in the process of photosynthesis and cellular respiration. NADP exists in two forms: oxidized (NADP+) and reduced (NADPH), with NADPH being essential for anabolic reactions, where cells build complex molecules. In photosynthesis, NADP+ is reduced to NADPH during the light-dependent reactions, capturing energy from sunlight. This NADPH is then used in the Calvin cycle to help convert carbon dioxide into glucose. Overall, NADP is vital for energy transfer and metabolic processes in organisms.