Practice question
Question
Upon blue light exposure, FMN forms a covalent bond with:
Explanation
Go with C — Cysteine. Under Phototropin+All, this is the standard explanation you’d use in class: it names the real driver or definition, while the rest are nearby but wrong. Not these: A) Histidine; B) Serine; D) Tyrosine. When two options sound similar, choose the one that matches the textbook definition most tightly.
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