Cell Division Gone Wrong

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CELL DIVISION GOING WRONG: Cancer

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Presentation transcript:

Cell Division Gone Wrong

Mutations A permanent change in the sequence of DNA of a gene Thesunwashotbuttheoldmandidnotgethishat. The sun was hot but the old man did not get his hat. T hes unw ash otb utt heo ldm and idn otg eth ish at.

Progeria

Hypertrichosis

Proteus syndrome

Cancer  A broad group of diseases that result in uncontrolled cell division.

Cancer Why does it keep dividing? The cells checkpoints might fail to identify problems or kill off the cell. As a result...

Cancer Tumour – a rapidly growing mass of cells

Cancer Benign tumour – the cells stay together and have no serious effect on surrounding tissues. Malignant tumour – the cells interfere with the function of neighbouring cells and tissues Malignant tumour Benign tumor

Cancer Metastasis – occurs when cancer cells break away from the original tumour and move to a different part of the body.

Causes of Cancer 1. Mutations – random changes that occur in the DNA while it is being duplicated.

Causes of Cancer 2. Carcinogens – are environmental factors that cause mutations. Tobacco Plastics Radiation X-rays Sunlight

Smoking and Cancer What else does smoking affect?? Lungs Lips Tongue Fingers Trachea Throat

Causes of Cancer 3. Some cancers can be hereditary depending on whether or not you obtain that portion of DNA from your parents. Ex. Breast cancer, colon cancer

Causes of Cancer 4. Infections & Viruses Virus enters cell and ‘highjacks’ it to reproduce Some viruses insert their own DNA inside the host cell, causing it to become cancerous

Cancer Screening This involves checking for cancer even if there are no symptoms. This is important to catch cancer at an early stage. ABCD (asymmetry, border, colour, diameter)

Cancer Fighting ‘Super Foods’