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Practice question

Question

Phytochrome apoprotein alone cannot absorb light because:

Options

Choose one · Correct answer highlighted

Explanation

B fits best: It lacks chromophore. Keep the PHYTOCHROME basics straight and It lacks chromophore stands out as the precise answer. Avoid: A) It lacks PAS domain; C) It is monomeric; D) It is unstable. Light and flowering items often hinge on which photoreceptor or day-length rule is in play.