Practice question
Question
Rate limiting enzyme in ethylene biosynthesis is:
Explanation
Pick B: ACC synthase. Thinking through Ethylene step by step rules out the lookalikes and leaves ACC synthase. Skip these: A) SAM synthetase; C) ACC oxidase; D) Methionine synthase. For hormones and genes, match the molecule or gene to its real role, not a neighboring pathway.
Discussion
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