- A Break double-stranded DNA at specific replication origins
- B Attach spindle microtubules to chromosomes at centromeres
- C Produce ATP via oxidative phosphorylation during division
- D Form the new cell plate during plant cytokinesis
Correct answer: B. Attach spindle microtubules to chromosomes at centromeres
Explanation: Kinetochores are protein complexes on the centromere of each chromatid. Spindle microtubules attach here to pull chromosomes apart.
Concept context
Mitosis and meiosis: how cells divide for growth, repair, and reproduction.