Difference between revisions of "Lock and Key Model"
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==Key Stage 3== | ==Key Stage 3== | ||
===Meaning=== | ===Meaning=== | ||
| − | The '''lock and key model''' is a | + | The '''lock and key model''' is a [[model]] used to explain why [[enzyme]]s only work on certain [[Substrate (Biology)|substrate]]s. |
===About The Lock and Key Model=== | ===About The Lock and Key Model=== | ||
| − | : The '''lock and key model''' proposes that an [[enzyme]] is a like lock and a [[Substrate (Biology)|substrate]] is like a key as only one key can fit a lock, just as only one [[substrate]] can fit into the [[Active | + | : The '''lock and key model''' proposes that an [[enzyme]] is a like lock and a [[Substrate (Biology)|substrate]] is like a key as only one key can fit a lock, just as only one [[Substrate (Biology)|substrate]] can fit an [[enzyme]]. |
| + | {| class="wikitable" | ||
| + | |- | ||
| + | |[[File:DenaturedEnzyme.png|center|400px]] | ||
| + | |- | ||
| + | | style="height:20px; width:200px; text-align:center;" |This [[diagram]] shows an [[enzyme]] (the lock) and the [[substrate (Biology)|substrate]] (the key) fitting together. If the lock is '[[denaturation|denatured]]' the key no longer fits the lock and so the [[enzyme]] does not work. | ||
| + | |} | ||
| + | |||
| + | ==Key Stage 4== | ||
| + | ===Meaning=== | ||
| + | The '''lock and key model''' is a [[model]] used to explain why [[enzyme]]s only work on certain [[Substrate (Biology)|substrate]]s. | ||
| + | |||
| + | ===About The Lock and Key Model=== | ||
| + | : The '''lock and key model''' proposes that an [[enzyme]] is a like lock and a [[Substrate (Biology)|substrate]] is like a key as only one key can fit a lock, just as only one [[Substrate (Biology)|substrate]] can fit into the [[Active Site|active site]] of an [[enzyme]]. | ||
| + | |||
| + | {| class="wikitable" | ||
| + | |- | ||
| + | |[[File:DenaturedEnzyme.png|center|400px]] | ||
| + | |- | ||
| + | | style="height:20px; width:200px; text-align:center;" |This [[diagram]] shows an [[enzyme]] (the lock) and the [[substrate (Biology)|substrate]] (the key) fitting together. If the lock is '[[denaturation|denatured]]' the key no longer fits the lock and so the [[enzyme]] does not work. | ||
| + | |} | ||
| + | |||
| + | ===References=== | ||
| + | ====Edexcel==== | ||
| + | |||
| + | :[https://www.amazon.co.uk/gp/product/1782948120/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948120&linkCode=as2&tag=nrjc-21&linkId=dedef775c6a43dbb0a609441525adac0 ''Lock and key model, page 37, GCSE Biology, CGP, Edexcel ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Lock-and-key model of enzymes, page 15, GCSE Combined Science, Pearson Edexcel ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1292120207/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120207&linkCode=as2&tag=nrjc-21&linkId=22455ff53961978667722edaa64c0be5 ''Lock-and-key model of enzymes, page 19, GCSE Biology, Pearson, Edexcel ''] | ||
Latest revision as of 15:28, 22 November 2019
Contents
Key Stage 3
Meaning
The lock and key model is a model used to explain why enzymes only work on certain substrates.
About The Lock and Key Model
- The lock and key model proposes that an enzyme is a like lock and a substrate is like a key as only one key can fit a lock, just as only one substrate can fit an enzyme.
 |
| This diagram shows an enzyme (the lock) and the substrate (the key) fitting together. If the lock is 'denatured' the key no longer fits the lock and so the enzyme does not work. |
Key Stage 4
Meaning
The lock and key model is a model used to explain why enzymes only work on certain substrates.
About The Lock and Key Model
- The lock and key model proposes that an enzyme is a like lock and a substrate is like a key as only one key can fit a lock, just as only one substrate can fit into the active site of an enzyme.
|
| This diagram shows an enzyme (the lock) and the substrate (the key) fitting together. If the lock is 'denatured' the key no longer fits the lock and so the enzyme does not work. |