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Cell Growth
Living things grow because they _____
more and more _____
Reasons to Reproduce
•_____ dead cells•________•Cells too ______
Why is Size a Prob?•Hard to get
nutrients in•Hard to excrete
waste
3cm
2cm
1cm
Rates Of Growth•Fast Cells–_____–_____– Hair
Slow Cells•Brain•______•_______•_______
Bacteria•Will reproduce within 20 minutes
•How many is that for 1 day if you start with just one?
Uncontrolled Growth
______
_______•Tumor- •cells are dysfunctional•not deadly
Malignant•Deadly•Spreads to other tissues, Called _______
Causes of Cancer
• _________• Mutagens
• Types: Carcinomas, sarcomas, Lymphomas
Leukemia
MitosisAnd you…
Mitosis•Process where nucleus divides into _ nuclei with same # and kinds of __________ as the parent
Cytokinesis•Process where ______ divides forming two cells
Chromatin
•Made of -
DNA & _______(uncoiled)
Chromosome Parts•Chromatids–Coiled DNA
•__________–Middle area
Cell Cycle
Life cycle of the cell from birth to next generation
Karyotype
DiploidCells
HaploidCells
22
__________
• Pairs of chromosomes one from each parent coding for the same gene
•Interphase•Prophase•Metaphase•Anaphase•Telophase
InterphasePMAT
Interphase•Period of Cell ______ G1
•DNA is ______ S•Prepares for split G2
Animal Cell _______
Plant Cell Interphase
IProphaseMAT
Prophase•Preparation time•_________ Visible•Centrioles opposite end•________ fibers form
Animal Cell Prophase
Plant Cell Prophase
IPMetaphaseAT
Metaphase•__________ line up and meet in the middle
Plant Cell
IPMAnaphaseT
Anaphase•Chromatids ______ apart
Plant Cell
IPMATelophase
Telophase•Chromatids _______•Nuclear Envelope reforms
Plant Cell
Cytokinesis•______ forms•_________ splits•2 cells formed
CytokinesisFurrow
Cytokinesis•In _______-–Cytoplasm pinches in two
Cytokinesis•In Plants-–Cell _____ forms; then the cell wall
THEEND