MDCAT Biology MCQ #271

Chlorophyll 'a' and chlorophyll 'b' differ in a single functional group. What is the specific group found in chlorophyll 'b'?

MDCAT Biology MCQ #271

  1. Question 1

    Q1. Chlorophyll 'a' and chlorophyll 'b' differ in a single functional group. What is the specific group found in chlorophyll 'b'?

    • A) Carboxyl group
    • B) Hydroxyl group
    • C) Methyl group
    • D) Aldehyde group

    Answer: Aldehyde group

    Explanation: Chlorophyll 'a' has a methyl group (-CH3), while 'b' has an aldehyde group (-CHO); this chemical detail determines their different absorption peaks.