Consider the following reaction in which substrate molecule R and substrate molecule S are converted into product molecule T and product molecule U - VCE - SSCE Biology - Question 8 - 2013 - Paper 1
Question 8
Consider the following reaction in which substrate molecule R and substrate molecule S are converted into product molecule T and product molecule U.
R and S → T and... show full transcript
Worked Solution & Example Answer:Consider the following reaction in which substrate molecule R and substrate molecule S are converted into product molecule T and product molecule U - VCE - SSCE Biology - Question 8 - 2013 - Paper 1
Step 1
A. this is an anabolic reaction.
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Answer
This statement is incorrect. An anabolic reaction typically requires energy input for the formation of complex molecules from simpler ones. In contrast, the reaction indicated in the diagram appears to release energy, thus suggesting a catabolic reaction.
Step 2
B. the reaction would release energy.
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Answer
This statement aligns with the evidence provided. The graph shows a decrease in energy from reactants (R and S) to products (T and U), suggesting energy is released in the process.
Step 3
C. the value of the activation energy for the reaction is shown by X.
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Answer
This statement is correct. The graph clearly indicates the activation energy as the peak between the reactants and products, represented by point X on the graph.
Step 4
D. product molecules T and U have less energy than substrate molecules R and S.
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Answer
This statement is accurate. The graph shows that products T and U are at a lower energy level compared to substrates R and S, indicating that energy has been released during the reaction.
