Cell Division - Mitosis
Cell Cycle – Mitosis
- Cell cycle: a cell grows, prepares for division, and divides into two new cells, which are called daughter cells. The cell cycle includes 3 main stages: interphase, mitosis, and cytokinesis.
- Cell division: The division of one cell into two daughter cells with the same genetic material (DNA). It allows organisms to grow and repair damaged structures.
- DNA: Deoxyribonucleic acid; the genetic material that carries information about an organism that is passed from parent to offspring. Chromosomes contain DNA.
- Chromosomes: a structure in the nucleus that contains hereditary material. (Can be duplicated or unduplicated.)
- Chromatids: each of the two identical copies of DNA making up a duplicated chromosome. They are tightly coiled into thickened strands that becomes visible during prophase.
- Centriole: Pair of cylindrical structures that help move the chromosomes
- Centromere: holds the chromatids together.
- Spindle Fibers: tiny, threadlike tubes in a cell to which the chromatids attach. They pull the chromosomes apart during anaphase.
- Interphase: The first stage of the cell cycle that takes place before cell division occurs, during which a cell grows and duplicates its chromosomes.
- Mitosis: The second stage of the cell cycle during which the cell’s nucleus divides to form two identical nuclei. Mitosis includes prophase, metaphase, anaphase, and telophase.
- Cytokinesis: The final stage of the cell cycle, in which the cell’s cytoplasm divides, forming two new daughter cells.
THE CELL CYCLE - MITOSIS
During the cell cycle, a cell ______, prepares for ______, and then divides into ______new cells. These two new cells, called ______cells, are identical to the parent cell because they have the same ______as the parent cell.
INTERPHASE (a cell spends ______in this phase of the cell cycle)
the cell ______to its full size
chromosomes are duplicated in the ______of the cell
the cell prepares to ______
MITOSIS (4 stages - Prophase, ______, Anaphase, ______)
Prophase (first stage)
longest stage of mitosis
centrioles separate and move to opposite ends of ______
spindle fibers ______
Metaphase (second stage)
shortest stage of mitosis
chromosomes attach to spindle fibers in ______of cell
Anaphase (third stage)
______split apart and chromatids separate from each other.
______move to opposite ends of the cell.
Telophase (fourth and last stage of mitosis)
chromatids reach ______ends of cell
______membrane begins to form around the chromosomes at each end
spindle fibers ______
CYTOKINESIS (final phase of cell cycle)
a new ______forms between the two nuclei, and the cell splits into two ______cells, each with identical DNA (genetic material).