Nutrition Basics
Calories
Essential Nutrients
Did you read the syllabus?

What was one piece of new information
you learned from reading the syllabus?
The amount of heat it takes to raise
one gram of water one degree centigrade.
What is a Calorie?
Good?
Bad?
Calories: where are they found?

Carbon containing (organic) substances
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wood, oil, paper, alcohol, cloth, coal, trees,
hay….. FOOD!
Calories=energy (food energy!)
Carbohydrates
4 calories/gram
9 calories/gram
 Lipids (fats and oils)
4 calories/gram
 Protein
 Alcohol…not essential….provides 7 calories/gram
All of the above contain carbon

Where do calories in food originate?

What is the origin of a plants dry weight?

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What is the ‘CO2 packaging’ process called?

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carbon dioxide (CO2) in the air
photosynthesis
A visual on where Calories (food energy)
come from in food.
Photosynthesis
Transfer 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
Photosynthesis
Transfer solar energy (nrg)  food nrg
solar nrg+6H2O+6CO2  glucose*+6O2
*glucose (simple sugar)
contains six carbon atoms from CO2
basic unit of all energy nutrients
aka glucose or C6H12O6
Cellular respiration
Transfer food nrg  ATP (cell nrg)
food nrg+O2  H2O+CO2+ATP+heat
Solar nrg  Food nrg Cell nrg
PHOTOSYNTHESIS
sunlight
CO2 +H2O+ NRG
ATP + heat
glucose
NRG
transfer
NRG nutrient+O2
food
CELLULAR
RESPIRATION
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
Purpose: To acquaint you with EN’s and
their food source.
 In assigned Expert Groups, 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 as a
study guide
 All resources acceptable to use.

Homework
Read the course outline : )
 Bring a food ….not candy or gum… label
next class 
 See class website for notes/handouts
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