Enzymes A review of how they work. Generate a definition of Enzymes Proteins that promote specific...
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Transcript of Enzymes A review of how they work. Generate a definition of Enzymes Proteins that promote specific...
Generate a definition of Enzymes• Proteins that promote specific reactions in
cells by lowering activation energy required to start a reaction.
http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_enzymes_work.html
How do enzymes work?• Lower activation energy
• increase speed of metabolic rates
• Break down….build up???
Induced fit model
• Enzymes are specific
• http://www.phschool.com/science/biology_place/labbench/lab2/induced.html
What happens after an enzyme does its job?
• Required in small amounts because as they work, not consumed.
Brainstorm of Enzymes • Saliva• Stomach • Nervous system: AcHase• Milk products• Papaya fruit• Unprocessed fruits• Kiwi: actiniclin• Soybeans (lipoxygenase)• Fireflies (luciferase)• Pineapples (bromelain)• Potatoes• Egg whites• Turnips (peroxidase)• Tears• Yeast (sucrase)• Lactase (sold overcounter)• Onions• Detergents• Catalase: liver
Based on the analogy…
1. What is the product?– pizza
2. What are the enzymes?– workers
3. What is the active site of the enzymes?– Hands of pizza makers
4. What is the substrate?– toppings
Challenge• Design an experiment that will test the
effectiveness of an enzyme.
• Stipulations– Experiment will be performed in class period – conduction is totally designed by experimenters– Enzyme must be available to science lab– Data collection must be qualitative and quantitative
• Review scoring guide for how you will be graded