BRAINCAKEATP
ATP (adenosine triphosphate) is the immediate source of energy in all cells. It is a phosphorylated nucleotide made of the base adenine, the pentose sugar ribose and three phosphate groups.
Energy is released when the bond to the last phosphate group is broken by hydrolysis, catalysed by the enzyme ATPase:
ATP + H2O → ADP + Pi + energy
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Key terms in this lesson
- atp synthase
- An enzyme, found in mitochondria, chloroplasts and cell membranes, that catalyses the synthesis of ATP from ADP and inorganic phosphate.
More in DNA, Genes and Protein Synthesis
- Nucleotides
- Nucleic Acids
- Phosphodiester Bonds
- Complementary Base Pairing
- Evidence for Semi-Conservative DNA Replication
- DNA Replication
- The Genetic Code
- Types of RNA
All 20 lessons in DNA, Genes and Protein Synthesis · All Edexcel AS-level Biology topics