Biology is the only subject in which multiplication ... - Weebly

Biology is the only subject in which multiplication ... - Weebly

Mitosis & Cancer: When Making New Cells Goes Terribly Wrong! Regents Biology 2006-2007 When is mitosis a good thing? When you have to add or replace cells growth & development repair replacement

Regents Biology When is mitosis a BAD thing When cells reproduce & they are not needed these cells take over organs, but dont do the right job they just keep making copies __________________ damages organs

Regents Biology Why would cells just make copies? If DNA gets damaged, cells stop listening to correct instructions ______________________ Causes of mutations:

UV radiation chemical exposure radiation exposure heat Regents Biology cigarette smoke

pollution age genetics Tumors __________________________ abnormal cells remain at original site as a lump most do not cause serious problems & can be removed by surgery Regents Biology

Tumors __________________________________ cells leave original site carried by blood system to other tissues start more tumors damage functions of organs throughout body Regents Biology

Treatments for cancers side effects Treatments kill rapidly dividing cells ______________________________________ poisonous drugs that kill rapidly dividing cells ______________________________________ high energy beam kills rapidly dividing cells

Regents Biology Any Questions?? Any Questions?? Regents Biology 2009-2010

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