OCR A Biology
Biology
OCR A Biology
Sample Data
| Front | The use of immobalised enzymes in biotechnology |
| Back | immobalised penicillin acyclase - make semi-synthetic penicillins from naturally produced penicillin, most bacteria resistent to penicillin but not semi-synthetic penicillin immobalised lactase - produes lactose-free milk, it hydrolyses lactose to glucose and galactose immobalised glucose isomerase - form fructose (marketable) from glucose (cheap) |
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| Front | Interaction of H+ with R groups 2.1.4(d) |
| Back | - H+ interacts with polar R groups so changing conc of H+ affects the interaction and interaction between R groups - more H+, less R groups able to interact with each other, bonds break and shape changes- less H+, more R groups interact, bonds form and shape changes - therefore narrow range called optimum pH
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| Front | Activation energy 2.1.4(b) |
| Back | - Energy required for reaction to start- Enzymes reduce amount by increasing successful collisions |
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