Chapter Questions
What is the difference between mitosis and cytokinesis?
Fill in the blanks: After the S phase, each chromosome is now composed of two genetically identical and they are attached at the
How many checkpoints occur in the cell cycle? During what phases do they occur?
Which stage of the cell cycle does the following cell depict? How do you know?
Is there any time a cell may exit the cell cycle and not progress to the next stage?
Briefly describe what occurs in each of the phases of the cell cycle: $\mathrm{G}_{1}, \mathrm{~S}, \mathrm{G}_{2}$, mitosis, cytokinesis.
True or False: Any genetic differences between daughter cells after mitosis are considered to be mutations.
If a cell fails a checkpoint but has already copied its DNA, it may undergo in order to prevent a defective cell from dividing (and possibly becoming cancerous).
What phase of mitosis is the cell below currently in? What structures (labeled $\mathrm{G}$ ) are straddling the middle dividing line of the cell (labeled F)?
What is the name of the chemical signal that tells a cell it needs todivide?