Practice question
Question
Red light converts phytochrome from:
Explanation
Answer: B) Pr to Pfr. For PSS-Sec-E-Sensory biology, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) Pfr to Pr; C) Inactive to active cryptochrome; D) Active to inactive. Name the process first, then pick the option that describes it — don’t reverse cause and effect.
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