Slide 2 Cell Growth and Division Slide 3 Cell Growth Living
things grow chiefly because of two things. 1. The number of cells
increases. Slide 4 2. The size of each individual cell increases.
Number 1 is actually due to number 2! Slide 5 Volume vs. Area The
volume, the growth of the internal parts of the cell surpasses that
of the area, or external parts of the cell. Slide 6 Limits The
growth is limited by two things The instructions, DNA. The amount
of available materials. Slide 7 Cell division The point at which
the internal exceeds the external = division. Parent Daughter 1
Daughter 2 Slide 8 Rate of growth In ideal conditions, E- coli can
double its volume in just 30 minutes. In one day a single bacteria
could produce a 14 Kg mass. Slide 9 In three days the mass of the
bacteria would equal that of the Slide 10 Disorderly growth Cancer:
a disorder in which cells have lost the ability to control their
rate of growth. P D1 D2 D3 D2 D3 D1 D2 D3 D2 D3 Slide 11 Cell
Division There are two main stages to division of Eukaryotic cells.
Mitosis Cytokinesis Slide 12 Mitosis The nucleus of the parent cell
is divided into 2. Each with the same number and type of
chromosomes. Slide 13 Cytokinesis The cytoplasm of the parent cell
divides. Two distinct cells are formed. Daughter cells Slide 14
Chromosomes Highly organized segments of genetic information. Made
up of chromatin. Slide 15 Chromatin A specific combination of DNA
and proteins. Slide 16 Chromatids Each chromosome has two identical
parts, chromatids. Joined by a centromere. Slide 17 The two
identical parts allow for the production of two identical cells.
Slide 18 The process of cell growth and division is a cycle.
Mitosis Cytokinesis Interphase Slide 19 Mitosis Cytokinesis
Interphase Slide 20 The period between cell divisions 3 phases G1,
S, and G2 Slide 21 1.G1: Cell growth 2.S: DNA replication 3.G2:
Preparation for mitosis Slide 22 Mitosis (4 phases) 1.Prophase
2.Metaphase 3.Anaphase 4.Telophase Slide 23 Prophase(fig 8-12)
Longest phase Centrioles take positions at opposite ends of the
cell Slide 24 Spindle fibers form between the centrioles
Chromosomes attach to the spindle Slide 25 The nucleolus disappears
The nuclear envelope breaks down. Slide 26 Metaphase(fig 8-14)
Shortest phase Chromosomes line up along the center of the cell.
Slide 27 Anaphase (fig 8-15) Centromeres split Individual
chromatids are pulled to opposite ends of the cell. Slide 28
Telophase (fig 8-16) Final phase Chromatids uncoil to reveal a mass
of chromatin. Slide 29 Nuclear envelopes reform around the
chromatin A nucleolus becomes visible for each daughter cell Slide
30 Slide 31 Slide 32 Cytokinesis Animal Cells The cell membrane
moves inward pinching the cytoplasm into two cells. Slide 33 Each
half contains a nucleus And all necessary organelles Plant Cells A
cell plate forms dividing the cell in half Slide 34 The cell plate
evolves into a new cell wall for each cell. Slide 35 Slide 36
Scientific Notation M X 10 n A.1.) 1.0 X 10 -8 cm A.2.) 1.0 X 10 10
cm B.1.) 0.000002 cm B.2.) 1,000,000 times greater
