Food Labels II Objective: Read food labels: calculate the relative contribution of calories from each food type.

Calories from Foods FoodCalories Per Gram Fat Carbohydrate Protein

Which saves more calories between Bars I and II removing the sugar or the fat? Bar I Bar II A. Sugar B. Fat Clicker Question 1

If a piece of bacon contains 1.2g of saturated fat, how many bacon equivalents of saturated fat are found in one Klondike bar? A. 4 B. 8 C. 11 D. 15 Clicker Question 2

Lipids and Health Describe the differences between the following Saturated Fats: Cholesterol:

Which of the following is TRUE when comparing steroids and triglycerides A. Both are composed of mostly C and H, but steroids have 4 fatty acids, while triglycerides only have 3 fatty acids. B. Both are found in membranes, but steroids are only found in animal cell membranes, while triglyerides are found in all cell membranes. C. While both function to store energy, some steroids like testosterone also function as hormones. D. Both are lipids and because they are hydrophobic are usually packaged into lipoprotein covered capsules to be transported in the bloodstream. Clicker Question 3

Why so fat? Animals store energy as fat because: twice the amount the energy can be stored in the same weight. So, you can get fat without eating fat: all Calories eaten in excess of what is needed for fuel are converted to Fat for storage.

If the average daily calorie intake recommended to maintain healthy weight is 2538 calories/day. will help you calculate not only total calories but carbs, proteins, and fat.) The RDA of fat should be no more than 30% of your calories. So you can calculate that for this “average” person, they should be consuming about __ g of fat each day. Clicker Question 4

According to laboratory analysis conducted by the Center for Science and Public Interest (CSPI), a small popcorn at Regal the country's biggest movie chain had 670 calories and 34g of saturated fat. The American Heart Association recommends reducing saturated fat to less than 7% of daily caloric intake. So, for our “average” person, this would mean that the small popcorn would give you ___ days of your allowance of saturated fat. Clicker Question 5

3. Phospholipids One fatty acid chain (non-polar hydrophobic) of triglyceride replaced with a phosphate group (charged, hydrophilic) chief component of lipid bilayer, outer membrane of all cells

Membrane Composition Integral membrane protein Peripheral membrane protein