Factors Affecting the Rate of Cellular Respiration (VCE SSCE Biology): Flashcards
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Five main factors affecting cellular respiration rate
Five main factors affecting cellular respiration rate
Temp, pH, glucose, oxygen, enzyme inhibitors
Optimal temperature
Optimal temperature
Temp where max enzyme function occurs for given condition
What happens to enzymes above optimal temperature?
What happens to enzymes above optimal temperature?
They denature; active site changes shape
Saturation point (enzymes)
Saturation point (enzymes)
When all enzyme active sites are occupied at max capacity
Oxygen's role in electron transport chain
Oxygen's role in electron transport chain
Final electron acceptor
Competitive inhibitor
Competitive inhibitor
Blocks active site, prevents substrate binding
Non-competitive inhibitor mechanism
Non-competitive inhibitor mechanism
Binds allosteric site, changes enzyme shape
Allosteric site
Allosteric site
Region on enzyme that is not the active site
Effect of low oxygen in animal cells
Effect of low oxygen in animal cells
Cells switch to anaerobic fermentation (lactic acid)
End-product inhibition example in glycolysis
End-product inhibition example in glycolysis
ATP inhibits phosphofructokinase