CAIE A-Level Biology A2 13.1.6 Pigment Chromatography Questions
Explain pigment chromatography in photosynthesis using evidence from each question and mark scheme.
- Syllabus
- 2028–2030
- Course
- Biology 9700
- Level
- A2
Exam points
- Explain pigment chromatography in photosynthesis.
CAIE A-Level Biology A2 13.1.6 Pigment Chromatography Questions question 1
Fig. 1.1 shows a transmission electron micrograph of part of a chloroplast.
Fig. 1.1
Membranes of the type labelled C in Fig. 1.1 were made into a liquid extract. Chromatography was then used to separate and identify the coloured components (pigments) in this extract. The resulting chromatogram showed that these membranes contain a yellow pigment, an orange pigment, a green-brown pigment and two different green pigments.
Describe how you would carry out chromatography to separate and identify the coloured pigments in the liquid extract of C.
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