Question

a drawing of a cell during a phase of the cell cycle is shown.
phase of the cell cycle
?
which statement describes the function of the unknown structures during cellular division?
a. they produce the energy needed for the cell membrane to pinch apart during cytokinesis
b. they store the organelles after they have been duplicated during interphase.
c. they allow the dna in the chromosomes to be replicated accurately during synthesis
d. they separate chromosomes and pull them to opposite poles during anaphase

Explanation:

The unknown structures in the cell cycle diagram (likely spindle fibers) function in mitosis/meiosis. During anaphase, spindle fibers attach to chromosomes and pull them to opposite poles. Option A: Energy production is by mitochondria, not these structures. Option B: Organelle storage isn’t their role. Option C: DNA replication (synthesis) involves enzymes, not these. Option D matches spindle fibers’ anaphase function.

Answer:

D. They separate chromosomes and pull them to opposite poles during anaphase