enzymes Flashcards

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1
Q

what are enzymes ?

A
  • enzymes are catalyst produced by living things
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2
Q

what do living things have inside them that goes on the whole time ?

A
  • chemical reactions
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3
Q

what do living things produce and what do they act as ?

A
  • produce enzymes that act as biological catalyst
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4
Q

what is a catalyst ?

A
  • a substance that increases the speed of a reaction without being changed or used up in the reaction
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5
Q

enzymes are proteins , what are they made up of ?

A
  • chains of amino acids
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6
Q

as well as catalyst , what else do proteins act as

A
  • structural components of tissues e.g. muscles hormones and anitbodie s
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7
Q

what do enzymes have so they can catalyse recations

A
  • they have special shapes
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8
Q

what is the process of lock and key hypothesis ?

A
  • an enzyme catalyse with a section out called an active site , part out is a substance
  • substance called substrate goes in to the enzymes to be a full shape -> then allows the reaction to happen
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9
Q

what are the 2 types of enzymes relations ?

A
  • catabolic

- anabolic

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10
Q

what does it mean when a enzyme has become denatured ?

A
  • it has lost some of its original properties
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11
Q

what reaction in enzyme is this (check link) - https://biochem80p.files.wordpress.com/2014/03/enzyme-working-mechanism.jpg

A

lock and key hypothesis

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12
Q

true or false ?

changing the rate of temperature changes doesn’t change the rate of an enzyme- catalysed reaction

A

false

it does change the rate of the enzymes reaction

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13
Q

what happens if the enzyme gets to hot ?

A
  • some of the bonds holding the enzyme together break then leading to destroy the enzymes special shape
    = becoming denatured
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14
Q

what temperature do enzymes in the human body work best at ?

A
  • 37 c
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15
Q

what can effect enzymes ?

A
  • increase of temperature

- increase of Ph

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16
Q

what is normally the optimum ph for enzymes ?

A
  • neutral ph 7
17
Q

give an example of a enzyme that works below ph 7 ?

A
  • Pepsin is enzyme that breaks down proteins in the stomach
  • pepsin is suited to acidic conditions