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Biology - 2.4 Enzymes > Co - Factors > Flashcards

Flashcards in Co - Factors Deck (6)
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1

what is a co-factor?

its a substrate that has to be present to ensure that an enzyme-catalysed reaction takes place at the appropriate rate (also called co-enzymes)

2

What do organic co-factors do?

> They bind temporarily to the enzymes active site. They participate in the reaction and are changed by it.
> They act as carriers moving chemical groups between different enzymes - are continually recycled

3

What is chloride ions (cl-)

the are inorganic cofactors for the enzyme amylase

4

How do inorganic co0factors work?

they work by helping the enzyme and substrate bind together. They don't directly participate in the reaction.

5

What is a prosthetic group

its a cofactor which is tightly bound to the enzyme

6

give an example of a prosthetic group and explain it

Zinc ions are a prosthetic group for carbonic anhydrase (an enzyme in red blood cells, which catalyse the production of carbonic acid from water & co2)