Download Cell Division - Wantagh School

Answer: No
Why?
Cells divide and the amount of cells
increases
 Reproduction
 Growth
 Repair
Each
new cells, called a
daughter cell is genetically
identical to the parent cell
 Chromatin
= unwound coils of DNA
 Chromatid = made up of genetic
material
 Chromosome= two chromatids joined
together
 Centromere= center of the
chromosome- holds chromosomes
together
 Centriole
= anchors cell during
division (plants do not have this)
 Homologous Chromosomes = similar
chromosomes paired together
 Humans
= 23 pairs = 46 total
 Humans:
46 chromosomes
23 homologous pairs
92 chromatids
 Diploid = # of chromosomes of that
species
 Haploid = half the number
chromosome #
Mitosis = a cell process in which the nucleus
divides to form two nuclei identical to each
other.
What happens
•DNA replicates
•Organelles double
in number
What happens
•DNA forms
chromosomes
•Spindle forms
•Centrioles move
toward opposite
poles
What happens
•Chromosomes line
up in the middle of
the cell “equator”
What happens
•Chromatids
separate and move
to opposite poles
What happens
•Nuclear
membrane
forms around
each group of
chromosomes
•Chromosomes
unwind
What happens
•Cytoplasm divides
•One cell becomes 2 cells
 Uncontrolled
cell division
 No one fully understands how cancer is
formed
Characteristics of Cancer Cells
Cell growth is uncontrolled
These cells do not function as a part of the body
The cells take up space and interfere with normal bodily functions
The cells travel throughout the body
The cells produce tumors and abnormal growths anywhere in your
body
 Genetics
 Smoking
 Exposure
 Radiation
 Viruses
to chemicals
 By
doctors looking at cell tissue
 Surgery
to remove cancerous tissues
 Radiation with X-rays to kill cancer cells
 Chemotherapy = the use of chemicals to
destroy cancer cells
 Early detection