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Maintaining a Balance: Dot point 1
- 1.1: Identify the role of enzymes in
metabolism, describe their chemical
composition and use a simple model to
describe their specificity on substrates
- Role: Enzymes are biological catalysts
whose function is to speed up (or slow
down) chemical reactions (metabolism).
To do this they lower the the activation
energy required to start the reaction
which is done by bringing specific
molecules together, rather than relying on
them colliding randomly.
- Chemical composition: They are globular
proteins, that is they have long chains of
amino acids that have been folded into a
specific shape
- Lock and Key model
- Enzyme specificity examples
- Rennin acts on milk
- Rennin acts on milk
- Enzyme specificity examples
- Role: Enzymes are biological catalysts
whose function is to speed up (or slow
down) chemical reactions (metabolism).
To do this they lower the the activation
energy required to start the reaction
which is done by bringing specific
molecules together, rather than relying on
them colliding randomly.
- 1.2:Identify the pH as a way of
describing the acidity of a
substance
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