MDCAT Biology MCQ #175

When comparing the chemical structures of Chlorophyll a and Chlorophyll b, what functional group is uniquely present in Chlorophyll a?

MDCAT Biology MCQ #175

  1. Question 1

    Q1. When comparing the chemical structures of Chlorophyll a and Chlorophyll b, what functional group is uniquely present in Chlorophyll a?

    • A) Methyl group
    • B) Aldehyde group
    • C) Magnesium ion
    • D) Phytol tail

    Answer: Methyl group

    Explanation: Chlorophyll a has a methyl group while chlorophyll b has an aldehyde group; this minor change significantly alters their absorption peaks.