Date post: | 28-Dec-2015 |
Category: |
Documents |
Upload: | silvia-parker |
View: | 215 times |
Download: | 1 times |
Cell Cycle
Producing new cells allows you to grow and replace cells that have died
Cell Theory: All cells come from existing cells
The cell cycle is the life cycle of the cell
The cell cycle begins when the cell is formed and ends when the cell divides to form two new cells
Making Prokaryotic Cells
Prokaryotes are simple, so their cell division is simple
Cell division in prokaryotes (bacteria) is called binary fission
Stage 1: Interphase
Longest stage of the cell cycle
Normal state of the cell – resting state
Eventually…Cell grows
Cell copies its
organelles and
chromosomes
Stage 2: Mitosis – Prophase
Nuclear membrane/envelop dissolves
Chromosomes from inside nucleus condense
Two centrioles move to opposite sides of the cell
Stage 2: Mitosis – Anaphase
Chromosomes split into chromatids
Chromatids separate and are pulled
to opposite sides of the cell
Stage 2: Mitosis – Telophase
Nuclear membrane/envelope reforms around each of the two sets of chromosomes
Nuclei separate and pull away from each other
Stage 3: Cytokinesis
Cytoplasm splits into two cells that are identical to the original cell
Each “daughter cells” contain the same number and quality of chromosomes