Cell Cycle

Question 1

Name every phase in the cell cycle.

Answer 1

Prophase: Chromosomes condense, and the nuclear envelope dissolves.
Metaphase: Chromosomes line up at the cell’s center.
Anaphase: Sister chromatids separate and move to opposite poles.
Telophase: Chromosomes unwind, and nuclear envelopes reform around them

Question 2

What happens during each stage of interphase?

Answer 2

G1: Cell grows bigger
S: DNA replication - sister chromatids form
G2: Cell prepares for cell division

Question 3

What are checkpoints in the cell cycle and why are checkpoints important?

Answer 3

Checkpoints make sure that everything is prepared for the next phase of the cycle and that there will be no complications.

Question 4

What is apoptosis and when is it used?

Answer 4

Apoptosis is basically a self-destruct button for cells that are damaged or for cells that are no longer going to be used.

Question 5

Explain how mitosis is important for these different types of organisms.

Answer 5

Single celled organisms: Allows them to reproduce
Multicellular organisms: It is necessary for them to grow and develop