chapter 1.2 biology in your world. objectives evaluate the impact of scientific research on the...
TRANSCRIPT
Chapter 1.2
Biology in Your World
Objectives• Evaluate the impact of scientific research on
the environment.• Evaluate the impact of scientific research on
society with respect to increasing food supplies.
• Explain the primary task of the Human Genome Project.
• Describe the contributions of scientists in fighting AIDS and cancer.
• Define the term gene therapy.
World Population
http://www.poodwaddle.com/worldclock.swf
Tropical Rain Forests
A typical 4 mile patch of rain forest contains as many as:
• 1,500 species of flowering plants, • 750 species of trees, • 125 mammal species, • 400 species of birds, • 100 species of reptiles, • 60 species of amphibians• 50 different species of butterflies
• Approx. 1 acre/sec
• Gone in 30 years?
• Lose more than 1,000,000 species• Biologists are working to save the
environment
Rainforests are disappearing
Waste potato products Cattle feed
Methane for power
plants
Cattle feed
Nutrient rich water for crops
Conservation and preservation
• Now everyday activities • Government, industry, and
individuals.
Advances
• Crop disease resistance• Herbicide resistance• Insect resistance• Nutritional content
Understanding the Human Genome
• Genome – a compete set of the genetic material in an individual
• “Blueprint of Life”• 3 Billion units
Human Genome Project
• Began in 2000• Scientists can
now read every gene
• Just have to translate them!
Biology is important…..
• Developing new medicines• Fighting diseases
like AIDS, cancer, H1N1 flu
AIDS• Emerged in early 1980’s• Caused by HIV – human
immunodeficiency virus• Transmitted through
contaminated body fluids• Attacks and destroys the
immune system• No vaccine• No cure
Cancer• Making great
progress• “Growth Defect” –
uncontrolled cell growth
•Many cancers are preventable•Many are treatable.•Many are curable!
Emerging Diseases
• West Nile Virus
•1999•Transmitted by mosquitos
•Humans•Horses•Birds
Gene Therapy
• Replacement of an abnormal gene with a healthy gene
Muscular Distrophy
• Muscular Distrophy• Muscle degeneration
Hemophilia• Bleeding/Blood
clotting disorder
Queen Victoria
Ryan White