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11 Cards in this Set
- Front
- Back
What is energy measured in?
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Joules
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What do organisms need energy for?
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Metabolism, movement, AT, maintenance, repair and division, production of e.g. enzymes and hormones, maintenance of body temperature (WBA)
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ATP + H₂O -->
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ADP + Pi + Energy
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Splitting of ATP to ADP is a condensation/hydrolysis reaction
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Hydrolysis
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What are the three ways of synthesising ATP?
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Photophosphorylation, oxidative phosphorylation, substrate-level phosphorylation
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When and where does photophosphorylaton take place?
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In chlorophyll-containing plant cells during photosynthesis
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When and where does oxidative phosphorylation take place?
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In the mitochondria of plant and animal cells during the process of ELECTRON TRANSPORT
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When and where does substrate-level phosphorylation take place?
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In plant and animal cells when phosphate groups are transferred from donor molecules to ADP to make ATP
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Why is ATP better as an immediate energy source than glucose?
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Each ATP molecule releases less energy than each glucose molecule (less wastage)
Hydrolysis of ATP to ADP is a single step process - immediate and rapid |
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ATP is NOT a high-energy substance, it is a ____________
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Intermediate energy substance that is used to transfer energy
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ATP is the source of energy for:
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Metabolic processes (e.g. making polysaccharides, polypeptides and DNA/RNA from nucleotides)
Movement AT Secretion (ATP needed for lysosome formation) Activation of molecules (e.g. in glycoloysis) |