Biology-Enzyme

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Biology-Enzyme

  1. 1. BY: PUTRY ENDAHSARI
  2. 2. Enzymes are proteins that function as a biological catalyst that speeds up a chemical reaction but isn’t changed by the reaction.
  3. 3. affect by the change in temperature enzymes in humans have optimum temperatures of around 40 degrees. Plants have enzymes with optimum temperature of about 25 degrees. most active below the activity of the enzyme decreases until it becomes inactive at low temperatures. above the enzyme becomes denatured and can no longer work.
  4. 4. affect by the change in ph Each enzyme has an optimum pH, if this pH changes, the shape of the active site of the enzyme is changed, thus the substrate will not be able to fit in it, and the enzyme becomes useless. ph 1 7 14 Acidic:Neutral:Alk
  5. 5. LOCK & KEY THEORY Lock = enzyme Key = substrate Only the correctly sized key (substrate) fits into the key hole (active site) of the lock (enzyme).
  6. 6. INDUCED FIT MODEL To describe that only the proper substrate is capable of inducing the proper alignment of the active site that will enable the enzyme to perform its catalytic function.
  7. 7. Breaking large molecules into small ones(catabolism-> produce energy) Building up large molecules from small ones(anabolism-> require energy) Converting one small molecule into another Enzymatic reaction

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