Enzymes
- Created by: N1ntendo-Sw1tch
- Created on: 28-02-23 11:53
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- Enzymes
- What are they?
- biological catalysts that speed up the rate of metabolic reactions, whilst remaining unchanged
- control all reactions
- metabolism
- large molecules broken down to smaller ones (catabolic)
- smaller molecules are built up into large complex ones (anabolic)
- metabolism
- All reactions are catalysed by an enzyme
- Globular proteins
- Properties
- specific (only catalyse one reaction)
- e.g. sucrase on sucrose
- Very efficient (lots of molecules of substrate converted to product per unit time)
- Break down toxic materials quickly
- specific (only catalyse one reaction)
- Where do enzymes work?
- intracellularly
- ATPase, DNA polymerase, DNA helicase
- Extracellularly
- Amylase, pepsin
- intracellularly
- How do enzymes work?
- lower activation energy allowing reactions occur at lower temps
- activation energy = energy needed to break existing chemical bonds and start off the reaction
- What are they?
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