Stages of Mitosis
What is the first stage of mitosis?
Prophase
What phase comes before mitosis?
Interphase
What structure organizes the spindle fibers?
Centrosome
Cytokinesis is apart of mitosis.
False (it follows mitosis).
Why is mitosis important for growth?
It increases the number of cells.
During which stage do sister chromatids separate?
Anaphase
Which part of interphase involves DNA replication?
S phase
What attaches to the centromere of each chromosome?
Spindle fibers
Mitosis occurs in gametes.
False (it occurs in somatic cells).
Why is mitosis important for repair?
It replaces damaged cells.
What happens to the nuclear envelope during prophase?
It breaks down.
What is the purpose of the G2 checkpoint?
To make sure DNA is replicated correctly and the cell is ready for mitosis.
What is the role of microtubules in mitosis?
They help separate chromosomes.
Spindle fibers are made of actin.
False (they are made of microtubules).
What happens if mitosis goes wrong?
It can lead to cancer or cell death.
Which stage is characterized by chromosomes lining up at the cell's equator?
Metaphase
How many daughter cells result from mitosis?
Two
Which organelle dissappears during prophase and reappears in telophase?
Nuclear envelope
DNA is condensed into chromosomes during prophase.
True
Why do cells need checkpoints during the cell cycle?
To prevent errors in division.
Name the stage where two nuclei form?
Telophase
Are the daughter cells genetically identical or different?
Identical
What structure holds sister chromatids together?
Centromere
Telophase is the last stage of the cell cycle.
False (Cytokinesis is the final stage).
How does mitosis contribute to genetic stability?
It ensures identical DNA in daughter cells.