What is respiration?
The controlled release of energy from organic molecules
How is energy released?
Organic compounds are oxidised to release their energy
How is ATP made?
energy released makes ATP
What is ATP
a nucleotide that is the energy currency of the cell
what does ATP consist of?
- ribose sugar
- adenine base
- three phosphate groups
how is ATP used?
- temporary energy storage
- energy transfer in cell
what happens when the final bond between phosphates is broken
This is a high energy bond so lots E is released when broken
Why is it good ATP is soluble in water?
can be transported round cell cytoplasm
Why is it good ATP is pH stable?
doesn’t get altered by H+ ions in different areas of the cell
Why is it good ATP cannot pass freely through the phospholipid bilayer?
doesn’t diffuse out the cell and stays inside the cell or organelle
Why is it good the third phosphate can easily be attached or detached in condensation and hyrdolysis reactions?
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A1.1 water32
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B1.2 proteins48
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Microscopes19
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C1.1 Enzymes49
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B1.1 Lipids34
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B1.1 carbohydrate28
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cell structure25
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respiration11
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cells organelles39
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A1.2 nucleic acids26
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cell specialisation29
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origin of cells17
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D1.1 DNA replication13
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membranes6
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water potential13
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mitosis32
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meiosis21
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PHOTOSYNTHESIS15
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viruses20
