Cell Growth & Division
I. Cell Growth
A. Cell volume increases at a much faster rate than surface area.
B. Cell eventually becomes into 2 identical, daughter cells. Divide
C. Cancer is a disorder where the cell has lost the ability to control its own rate of growth.
II. Cell Division
A. Cell Cycle:
1. G1 phase-growth phase
2. S phase- DNA replication
3. G2 phase- preparation for mitosis.
This is interphase ^.
Process where the nucleus of a cell is divided into 2 nuclei, with the same genetic material as parent cell.
a. Prophase- longest phase chromosomes appear, centrioles (animal cells only) moves to poles, spindles appear.
b. Meta phase- shortest phase, chromosomes line up at equator.
c. Anaphase- centromeres that join sister chromatids split, chromatids move to opposite sides of the cell.
d. Telephase- chromosomes uncoil into chromatin nuclear membrane forms in each cell, nucleolus is visible.
5. Cytokinesis (occurs after Mitosis