Proteins and Mutations

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  • Created by: Lily04
  • Created on: 29-05-17 15:12
give 3 examples of proteins
collagen, insulin, haemoglobin
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what is an enzyme ?
biological catalyst- each enzyme is specific to each substrate
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what is the structure of an enzyme called?
active site
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how do mutations occur or what causes them?
spontaneously or caused my chemicals such as tar and radiation
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What represents the lock and what represents the key in the lock and key mechanism ?
lock = enzyme, key = substrate
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What is the job of the haemoglobin protein ?
carrier molecule- carries oxygen around the body
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complete the sentence: each enzyme has a unique.....
sequence of amino acids which results in a specific shape
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Explain how PH levels affects enzymes.
if not at the optimum PH the active site will not fit with the substrate, as the enzyme molecule distorts (denatures) eventually meaning the substrate can longer fit to the active site.
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Explain how temperature affects enzymes and the lock and key mechanism
As the temperature increases, the molecules gain more energy; more collisions occur and the rate of reaction increases. Above optimum temperature, the enzyme denatures and the reaction stops
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Q10 : temperature coefficient value....
rate at higher temperature / rate at lower temperature
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True or false: all genes are switched off in cells
FALSE
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Other cards in this set

Card 2

Front

what is an enzyme ?

Back

biological catalyst- each enzyme is specific to each substrate

Card 3

Front

what is the structure of an enzyme called?

Back

Preview of the front of card 3

Card 4

Front

how do mutations occur or what causes them?

Back

Preview of the front of card 4

Card 5

Front

What represents the lock and what represents the key in the lock and key mechanism ?

Back

Preview of the front of card 5
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