Question

1. if a cell shows repeated dna damage but continues dividing, what system has repeatedly?

a ribosome function
b cell membrane transport
c checkpoints
d mitochondria

Explanation:

Cell cycle checkpoints are control mechanisms that ensure the integrity of the genome. If a cell has repeated DNA damage but continues to divide, it suggests that the checkpoints (which normally halt the cell cycle for DNA repair or apoptosis if damage is irreparable) are malfunctioning. Ribosomes are for protein synthesis, cell - membrane transport is for moving substances in and out of the cell, and mitochondria are for energy production. None of these directly relate to regulating the cell cycle in response to DNA damage.

Answer:

C. Checkpoints