[Campbell Biology P.162] Based on the 'VISUAL SKILLS' question and the accompanying diagram,... | Practice Question

Based on the 'VISUAL SKILLS' question and the accompanying diagram, how many tubulin dimers are in the boxed row shown in the microtubule structure?

  • A: Six
  • B: Seven
  • C: Eight
  • D: Nine

Explanation

By counting the individual tubulin dimers each consisting of an alpha and beta subunit within the boxed row in the microtubule diagram, there are clearly nine dimers.