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Do Now – 4 minutes. Define epidemic What do you know about the obesity epidemic in America?. Anatomy. Unit Two: Building Blocks of Life. What are we learning today?. Our goal for today is to learn about the structure and function of lipids Our goal for this YEAR is 80% mastery of material - PowerPoint PPT Presentation
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Do Now – 4 minutes
Define epidemic What do you know about the obesity
epidemic in America?
ANATOMY
Unit Two: Building Blocks of Life
What are we learning today? Our goal for today is to learn about the
structure and function of lipids Our goal for this YEAR is
80% mastery of material 3 point increase on our ACT
Lipids Sources
Commonly known as... FATS Butter Cheese Oils Peanut butter Nuts Fish Meat
Lipids Roles
Long-term energy storage Insulation and cushioning Cell Membranes Hormones Cholesterol
Lipids Structure
ALL LIPIDS ARE HYDROPHOBIC (they hate water!) This is why they don’t mix with water when you
go to wash your hands Three types
Regular lipids Phospholipids Steroids
What are lipids made of?
Regular lipids.. One glycerol group Three fatty acids
What are lipids made of?
Phospholipids One glycerol group 2 fatty acids + 1 phosphate
group Why is this important?
The outside of the cell is hydrophilic (likes water)
The inside of the cell is hydrophobic (dislikes water)
This makes for great MEMBRANES!
What are lipids made of?
Steroids 4 fused carbon rings
Examples Cholesterol Found in cell membranes Hormones Testosterone
Lipids Structure
Unsaturated: Double bonds between carbon, liquid at room temp Polyunsaturated (manydouble bond) Monounsaturated (only one double bond
Saturated: Single bonds between carbon, solid at room temp, least healthy!
Special Notes
Trans fats unsaturated fats that are HUMAN MADE
Your body doesn’t know how to deal with them!
They are BAD for you!!!
Major Food Sources of Trans Fat for American Adults
(Average Daily Trans Fat Intake is 5.8 Grams or 2.6 Percent of Calories)
Impact of the American diet
This study starts in 1985 – just before you were born
Obesity Trends* Among U.S. AdultsBRFSS, 1985
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
Obesity Trends* Among U.S. AdultsBRFSS, 1986
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
Obesity Trends* Among U.S. AdultsBRFSS, 1987
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
Obesity Trends* Among U.S. AdultsBRFSS, 1988
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
Obesity Trends* Among U.S. AdultsBRFSS, 1989
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
Obesity Trends* Among U.S. AdultsBRFSS, 1990
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
Obesity Trends* Among U.S. AdultsBRFSS, 1991
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
Obesity Trends* Among U.S. AdultsBRFSS, 1992
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
Obesity Trends* Among U.S. AdultsBRFSS, 1993
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
Obesity Trends* Among U.S. AdultsBRFSS, 1994
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
Obesity Trends* Among U.S. AdultsBRFSS, 1995
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
Obesity Trends* Among U.S. AdultsBRFSS, 1996
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
Obesity Trends* Among U.S. AdultsBRFSS, 1997
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
Obesity Trends* Among U.S. AdultsBRFSS, 1998
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
Obesity Trends* Among U.S. AdultsBRFSS, 1999
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
Obesity Trends* Among U.S. AdultsBRFSS, 2000
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
Obesity Trends* Among U.S. AdultsBRFSS, 2001
Source: Mokdad A H, et al. J Am Med Assoc 1999;282:16, 2001;286:10.
In Class Activity
Read article out loud Make a list of types of fats, how much
they should be eaten, and where they come from
Homework
None!