Transcript notes during the presentations

Cell Cycle Phases
Interphase
*Cell Membrane, nuclear membrane,
cytoplasm double
*Organelles double
* DNA in the form of chromatin and
doubled
A: chromosomes, centromeres,
spindle fibers and centrioles
D: Nuclear membrane
Centromeres in middle of cell,
attached to chromosomes, which are
attached to spindle fibers, which are
attached to centrioles
D: nuclear membrane
*Centrioles
tug on spindle fibers pulling
chromosomes apart
D: Centromeres are lost
A: Two new nuclear membranes
D: Spindle fibers and centrioles disappear
How?
* Animals- cell membrane pinches inward
* Plants- Cell plate grows from center outward
* Two new cells identical to parent cell and each
other
• Each cell contains same number of
chromosomes as parent cell
Interphase = 80%
All Materials Double
DNA duplicates
and cell grows
Nucleus
Doubles
Cell
Growth
Cytoplasm Divides
1. Growth
2. Replace worn out cells
3. Repair damaged cells
Cells that do not go through cell cycle:
Muscle & Nerve
Chromosome
Nuclear
membrane
Cell membrane