Be sure to turn in any labs from yesterday Today we will be discussing Mitosis Every minute your body needs to make 300 MILLION new cells Your DNA carries all the instructions for the cell including when to do mitosis ID: 512861
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Slide1
Mitosis & Cancer
Be sure to turn in any labs from yesterday
.
Today
we will be discussing:Slide2
Mitosis
Every minute your body needs to make 300 MILLION new cells!!
Your DNA carries all the instructions for the cell, including when to do mitosisSlide3
Mutations
A mutation is an error in DNA. This error can cause many different things.Slide4
Mutations
Sometimes that mutation can cause mitosis to mess up.
If mitosis starts to mess up, cells begin dividing uncontrollably. This is how cancer begins.Slide5
Tumors
Cells that divide uncontrollably will create a tumor. Tumors can be benign (not harmful, can be removed) or malignant (bad and will spread!)Slide6
Cancer
Cancerous cells continue to divide uncontrollably and can harm the rest of the body.
They use valuable resources (oxygen and food)
They can damage other organs.Slide7
Cancer Cells
Cancer cells are weird in a lot of ways:
1. They
Cancer cells are frequently "
immortal
": whereas normal cells divide about 50 times and them die, cancer cells can go on dividing
indefinitely.2. Cancer cells often have unusual numbers of chromosomes or mutations in chromosomes. 3. Cancer cells may also have an abnormal cell surface; instead of "sticking" to its neighboring cells, cancer
cells
tend
break
attachments
to its
neighbors cells, allowing for
metastasis.
4. Cancer
cells ignore the usual
cues and
continue
multiplying
after contact with other cells are made, piling up until all nutrients are exhausted
.Slide8
What Causes Cancer?
Each table has an article to read about 1 possible cause of cancer.
Read the article then
m
ake a poster showing:
The cause
A symbol for the cause (draw this)One sentence to describe the causeOne sentence to explain how this contributes to cancerOne sentence to say if this can be prevented, if it can, how? If it cannot, why?Slide9
Gallery Walk
Each group will have their poster hung up in the room
Everyone will silently walk around and read/ take notes about the poster