Biology Study Guide 2

Biology Study Guide 2 - Chapter 5-6 Study Guide 2/26/12...

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Chapter 5-6 Study Guide 2/26/12 Latrelle S. Keith Chapter 5 Sexual reproduction = 2 organisms; asexual reproduction = 1 organisms Cancer is a disease that begins when a single cell replicates itself although it should not Cell division is the process a cell undergoes to make copies of itself; is normally regulated so that a cell divides only when more cells are required and when conditions are favorable for division. A cancerous cell is a rebellious cell that divides without being given the “go-ahead” A tumor is a unregulated cell division which leads up to a pileup of cells that form a lump; a mass of cells that don’t have a function in the body. Benign tumors are tumors that stay in one place and do not affect the surrounding structures Some benign tumors are harmless, others are cancerous Malignant or cancerous; tumors that invade surrounding tissues Cells of a malignant tumor can break away and start new cancers at distant locations through metastasis Cancer cells can travel anywhere in the body via the lymphatic and circulatory systems Lymphatic system collects fluids lost from microscopic blood vessels called capillaries Malignant and metastatic tumors are cancerous Cancer cells can: divide when they should not, invade surrounding tissues, move to other
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Biology Study Guide 2 - Chapter 5-6 Study Guide 2/26/12...

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