Did you read the syllabus? What was one piece of new information
you learned from reading the syllabus? Any questions about the class?
Nutrition Basics
CaloriesEssential Nutrients
What is a Calorie?
Good? Bad?
The amount of heat it takes to raise one gram of water one degree centigrade.
Calories: where are they found? Organic, carbon containing substances
wood, oil, paper, alcohol, cloth, coal, trees, hay…..
Calorie (energy) sources relevant to nutrition Carbohydrates Lipids (fats and oils) Protein Alcohol…not essential….provides 7 calories/gram
FOOD!
4 calories/gram
4 calories/gram9 calories/gram
Calories: where do they originate andhow do they get into food? Think plants. What is the origin of most of
their organic matter (dry mass)? carbon dioxide (CO2) in the air we breathe
What is the ‘CO2 packaging’ process called? photosynthesis
A visual on where Calories (organic
matter) come from in food.
PhotosynthesisTransfer solar energy (nrg) food nrg
solar nrg+H2O+CO2 glucose*+O2
*glucose (simple sugar) contains six carbon atoms from CO2
basic building block of all carbohydrates
PhotosynthesisTransfer solar energy (nrg) food nrg
solar nrg+6H2O+6CO2 glucose*+6O2
*glucose (simple sugar) contains six carbon atoms from CO2
basic building block of all carbohydrates
Cellular respirationTransfer food nrg ATP (cell nrg)
food nrg+O2 H2O+CO2+ATP+heat
CO2 +H2O+ NRG
PHOTOSYNTHESIS
CELLULAR RESPIRATION
sunlight glucose
ATP food
Solar nrg Food nrg Cell nrg
NRG nutrient+O2NRG
transfer
Essential Nutrients
What does ‘essential’ mean to you?
‘Essential’ in nutrition means: Required for health Must be obtained from our diet What are the essential nutrients?
Non-Essential Nutrients Required for health too! We make enough to our meet needs
creatine, lecithin, cholesterol etc.
EN Activity Work in assigned Expert Group. Complete Expert Worksheet; turn in today. When prompted, move to Base Group. You will be the Expert in your Base Group. Complete EN Summary Worksheet (keep as
study guide for Exam1) Text, classroom texts, peers, instructor,
internet OK to use.
Homework Read the course outline : ) Bring a food ….not candy or gum… label
next class See class website for notes/handouts