C growth factors d apoptosis questions 8 10 the

C growth factors.
D apoptosis.
Questions 8-10
The spindle fibers of dividing cells were labeled with fluorescent dye. At the beginning of
anaphase, a laser beam was used to mark a region of the spindle fibers about halfway between
the centrioles and the chromosomes. The laser beam stopped the dye from glowing in this
region, as shown in the second diagram. The laser did not inhibit the normal function of the
fibers.
8. This experiment tests a hypothesis about
A how chromosomes migrate during cell division.
B how fluorescent dyes work in the cell.
C the effect of lasers on a cell.
D why cells divide.
9. The diagrams show that chromosomes move to the poles of the cell as the spindle fibers 10. Open-Ended Response
11. Explain why careful regulation of the cell cycle is important to multicellular organisms.