A little bit of review… The six major classes of nutrients are

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Presentation transcript:

A little bit of review… The six major classes of nutrients are ID the macronutrients above. Why are they called macronutrients? Identify the macronutrient from the descriptions below. Found in dietary fiber A major component of cell membrane Provides the basic structure of muscles Provide insulation and support body organs Used mainly as an important source energy Carries lipid soluble vitamins (A, D, E, K) Consists of carbon, oxygen and hydrogen atoms Regulates chemical reactions needed for life as a catalyst Consists of carbon. Oxygen, hydrogen, and nitrogen atoms Regulate chem rxns as either a product, reactant, or a medium Nutrients are needed for the following reasons: Provide… – for growth and development Regulate… – respond to the environment and maintain homeostasis Supply… – the capacity of a physical system to do .

What is Energy?

Biochemical Energy http://www.doctortee.com/dsu/tiftickjian/cse-img/biology/enzymes/atp.jpg

Energy in Foods

Energy in Foods Food  ATP  used by the body energy producers vs. energy releasers calories x 1000 = kilocalories / kcal / Calories / Cal

Bomb Calorimeter Calorie – the amount of heat required to raise the temperatuer of 1 g of water 1 degree Celsius

4-9-4 Method ex in the text (pg 12)

Vocabularies Adenosine triphosphate Energy yielding nutrients Calories Bomb calorimeter