[Campbell Biology P.161] Based on Figure 6.20 and its caption, which statement accurately de... | Practice Question

Based on Figure 6.20 and its caption, which statement accurately describes the components of the cytoskeleton shown?

  • A: The green structures are microfilaments, and the reddish-orange structures are microtubules.
  • B: Microtubules are green, microfilaments are reddish-orange, and intermediate filaments are also clearly visible in blue.
  • C: The blue color tags the DNA in the nucleus, and the green structures represent microtubules.
  • D: All three major components of the cytoskeleton—microtubules, microfilaments, and intermediate filaments—are equally evident.

Explanation

The caption for Figure 6.20 clearly states: 'The cytoskeletal elements have been tagged with different fluorescent molecules: green for microtubules and reddish-orange for microfilaments. A third component of the cytoskeleton, intermediate filaments, is not evident here. The blue color tags the DNA in the nucleus. '