Content Standard 1.2 Cells can differentiate and may develop into complex multicellular organisms (i.e., cells, tissues, organs, organ systems, organisms).

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Presentation transcript:

Content Standard 1.2 Cells can differentiate and may develop into complex multicellular organisms (i.e., cells, tissues, organs, organ systems, organisms).

Euglena

Protozoans - 5 min

Tissues - 4 min

Organ Systems - 4 min

Organisms Any complete living thing is considered an organism. Organisms can be either single-celled or multicellular.

How many different species of microscopic animals are found in a sample of pond water? Lab Question:

The organisms represented in this key provide the foundation for sustaining freshwater life. End

All organisms are controlled by the DNA in the nuclei of their cells.

Any change in the DNA of an organism Mutation

Changes in DNA cause changes in the way cells behave. Mutation

Genes - 4 min

Ultraviolet radiation Tars from tobacco Asbestos Common Mutagens

Aging and Cancer are caused by changes in cells.

Aging and Cancer - 11 min

Carcinogen - an agent known to cause cancer.

1

2

3

MM is the most serious form of skin cancer. Even so, if diagnosed and removed while it is still thin and limited to the outermost skin layer, it is almost 100% curable.

Insitu melanomas occupy only the upper-most part of the epidermis, the top layer of skin.

Invasive melanomas are the most serious kind...

Invasive melanomas have penetrated deeply into the skin spread to other parts of the body.

Cancer - 6 min

Warning The following may not be suitable for young children

Both begin as a small spot like this Basal Cell Carcinomas

BCC

SCC

MM

Treatments

Surgery The tumor is removed, along with a margin of cancer-free skin.

Chemotherapy Reaches cells all over the body and destroys cancer cells that may have traveled from the primary tumor.

Radiation Therapy Directed application to destroy cancer cells in a specific area of the body.

Immunotherapy Strengthens the body's own immune system to attack the cancer cells.

Cheek Cells