the facts about cancer. Such as what causes it, possible treatments and what it acctually is.

1. canc
er

2. WHAT IS CANCER?:
Cancer is a group of
disorders in which
certain cells loose their
ability to control the
rate of mitosis
They form a mass of
cells called a tumour.
cancer
malignant benign

3. BENIGN TISSUE:
Cells stop dividing over time
Not life threating
Can be removed through surgery
Don’t invade other tissues
E.G. Warts

4. MALIGNANT TISSUE:
Uncontrollable multiplication of abnormal cells
Invade other cells and move around the body
Movement called metastasis
Can divide indefinitely

5. CAUSES OF CANCER:
Genes – oncogenes
Cancer causing agents – carcinogens

6. MEIOSIS:
Is a form of nuclear division, in which the daughter
nuclei contains half the number of chromosomes
of the parents.
Daughter cells are NOT identical
Occurs in gametes

7. FUNCTIONS OF MEIOSIS:
Functions in multicellular organisms
Allows sexual reproduction without
increasing the number of chromosomes
in the offspring
Allows new combination of genes –
variation.