What is ATP? Explain its structure, synthesis and function.
ATP, which stands for adenosine triphosphate, is a biomolecule formed by a purine base (adenine), a sugar molecule (ribose) and three phosphate groups. Its main function is to store energy within the cell. This energy is released through an hydrolysis reaction, catalyzed by an enzyme called ATP hydrolase, in which ATP is decomposed in ADP (adenosin diphosphate) and Pi (phosphate). ATP hydrolysis is an exotermic reaction, releasing energy which is used by the cell. This reaction is reversible by action of the ATP synthase, which synthethizes ATP to store energy. Some examples of metabollic processes producing ATP are photosynthesis and respiration.
AR
Related Biology A Level answers
All answers ▸Explain why a mutation in the viral RNA leads to a change in the 3D shape of the protein antigens (3 marks)
How is blood glucose controlled in homeostasis?
Explain the post-transcriptional changes that occur in mRNA before translation.
Detail the pathway of oxygenated water in the ventilation of a fish. Name and briefly describe the mechanism by which gaseous exchange takes place.