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Day 26 BiologyApril 1011, Tuesday & Wednesday
1. Organism of the Day: Sarcoma (animal cell)2. Lab: Onion Cell Cycle3. Homework Due: Read Chapter 10 Cell Growth & Division
pages 279285 & Complete 10.2 Cell Division Worksheet Due Tuesday/Wednesday
4. Lab Make Up: DNA Extraction Wednesday
5. Assignment: 10.3 & 10.4 Cancer Worksheet6. Group Quiz: Cell Cycle & 10.2
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Generally, the cause of most soft tissue sarcomas is unknown. One of the few soft tissue sarcomas that has a known cause is Karposi's sarcoma. It occurs in people with defective immune systems and is caused by a virus known as human herpes virus 8 (HHV8).
Human simplex virus type 1 (HSV1): mouthHuman simplex virus type 2 (HSV2): genitalVaricellazoster virus (HHV3)EpsteinBarr virus (HHV4): monoCytomegalovirus (HHV5): immune systemHuman herpes virus 6 and 7 (HHV6 and HHV7): HIV
There are 8 different types of viruses that are known to cause sarcomas
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Cell Cycle & Cyclins
These are proteins that help regulate cell division. Sometimes, these proteins are altered causing them to malfunction (cell keeps dividing out of control).
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Mitosis & Cell Cycle Notes Continued
Apoptosis: Programmed cell death that plays a key role in the development of organs and tissues.
Cyclins: Proteins that control the process of cell division.
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Mitosishttp://images.google.com/imgres?imgurl=http://www.eastcentral.edu/acad/depts/BI/AlliumMitosisLabels.jpg&imgrefurl=http://www.eastcentral.edu/acad/depts/BI/plant_mitosis_labels.html&h=480&w=537&sz=62&tbnid=lTgMEQW4CXIJ:&tbnh=115&tbnw=128&start=64&prev=/images%3Fq%3Donion%2Broot%2Btip%26start%3D60%26hl%3Den%26lr%3D%26sa%3DN
Prophase
Metaphase
Anaphase
Cytokinesis