[Campbell Biology P.245] Based on Figure 10.12b, which statement accurately describes the co... | Practice Question

Based on Figure 10.12b, which statement accurately describes the components shown in the computer model of a photosystem?

  • A: The purple ribbons represent chlorophyll molecules, while the bright green ball-and-stick models represent protein subunits.
  • B: Both the purple ribbons and bright green models represent different types of pigment molecules.
  • C: The bright green ball-and-stick models represent chlorophyll molecules, and the purple ribbons represent protein subunits.
  • D: The entire structure, including both green and purple components, is located in the stroma.

Explanation

Figure 10.12b's caption states: 'Chlorophyll molecules bright green ball-and-stick models within the membrane; the tails are not shown are interspersed with protein subunits purple ribbons; notice the many α helices spanning the membrane .' This directly identifies the green models as chlorophyll and the purple ribbons as protein subunits.