Post on 18-Jan-2016
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8.3 Notes8.3 Notes
Cancer and the Cell CycleCancer and the Cell Cycle
Cell cycle--controlled by proteins and enzymes
Uncontrolled cell division is caused by: Failure to produce enzymes Overproduction of enzymes Production of enzymes at the wrong time
Cell cycle--controlled by proteins and enzymes
Uncontrolled cell division is caused by: Failure to produce enzymes Overproduction of enzymes Production of enzymes at the wrong time
Cancer--Results from uncontrolled cell division
Tumor--Masses of tissue caused by cancer, they deprive normal cells of nutrients
Cancer--Results from uncontrolled cell division
Tumor--Masses of tissue caused by cancer, they deprive normal cells of nutrients
Metastasis--Cancer cells enter the blood stream and spread through out the body to other organs
Metastasis--Cancer cells enter the blood stream and spread through out the body to other organs
Causes of Cancer--environmental and genetic factors
Environmental causes--cigarette smoke, air and water pollution, UV radiation
Causes of Cancer--environmental and genetic factors
Environmental causes--cigarette smoke, air and water pollution, UV radiation
Healthy Lungs Smoker’s Lungs
UV RadiationUV Radiation
Ultraviolet (UV) photons harm the DNA molecules of living organisms in different ways. In one common damage event, adjacent bases bond with each other, instead of across the “ladder.” This makes a bulge, and the distorted DNA molecule does not function properly.
Cancer prevention--a healthy lifestyle can help prevent cancer
Healthy lifestyle consists of-- healthy diet high in fiber low in fat Vitamins and minerals Exercise Avoiding bad decisions (ex. Tobacco)
Cancer prevention--a healthy lifestyle can help prevent cancer
Healthy lifestyle consists of-- healthy diet high in fiber low in fat Vitamins and minerals Exercise Avoiding bad decisions (ex. Tobacco)