Part of a metabolic pathway used by cells to produce the amino acid alanine is shown - Scottish Highers Biology - Question 3 - 2018
Question 3
Part of a metabolic pathway used by cells to produce the amino acid alanine is shown.
pyruvate
kinase
phosphoenol ---> pyruvate ---> alanine
Alanine is ... show full transcript
Worked Solution & Example Answer:Part of a metabolic pathway used by cells to produce the amino acid alanine is shown - Scottish Highers Biology - Question 3 - 2018
Step 1
1 Pyruvate kinase reduces the activation energy needed to convert phosphoenol pyruvate into pyruvate.
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Answer
This statement is correct. Pyruvate kinase catalyzes the conversion of phosphoenol pyruvate to pyruvate, which lowers the activation energy of the reaction.
Step 2
2 Phosphoenol pyruvate is the substrate for pyruvate kinase.
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Answer
This statement is also correct. Phosphoenol pyruvate is indeed the substrate that pyruvate kinase acts upon during the conversion process.
Step 3
3 Alanine can bind to the active site of pyruvate kinase.
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Answer
This statement is correct as well. Alanine, being a non-competitive inhibitor, can bind to the active site of pyruvate kinase, thereby inhibiting its activity.
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