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The Cell and Energy

The Cell and Energy. The Inner Life of a Cell. ATP – adenosine triphosphate. ATP – adenosine triphosphate. Made up of: Adenine: a nucleic acid Ribose: a 5-carbon sugar Three phosphate molecules . ATP – adenosine triphosphate. Like money – pays for work

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The Cell and Energy

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  1. The Cell and Energy The Inner Life of a Cell

  2. ATP – adenosine triphosphate

  3. ATP – adenosine triphosphate • Made up of: • Adenine: a nucleic acid • Ribose: a 5-carbon sugar • Three phosphate molecules

  4. ATP – adenosine triphosphate • Like money – pays for work • High energy bonds connect the phosphate groups • Kinases are enzymes that de-phosphorylate ATP

  5. ATP – adenosine triphosphate • De-phosphorylation • ATP → ADP + Pi → AMP + Pi • Energy released with bonds breaking • ADP has less energy than ATP (80%) • AMP has less energy than ADP (20%) • Phosphorylation • AMP + Pi → ADP + Pi → ATP

  6. ATP – adenosine triphosphate • ATP needs to be continually replaced

  7. Two other names to recognize… • NAD (nicotinamide adenine dinucleotide) is an important enzyme for cellular respiration • NADP is an important enzyme in photosynthesis

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