18
6 Enzymes are catalysts.
(a) Define the term catalyst.
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(b) Fig. 6.1 shows diagrams of three enzymes and eight different substrates.
W
1
3
V
P
U Q
2 R
T S
Fig. 6.1
(i) State the letter of the substrate that will be broken down by enzyme 1.
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(ii) Explain, in terms of enzyme structure, the reason for your choice in 6(b)(i).
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