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Assignment Title: 352295_RN_2103213618_1_MT_352295-636264580252295743-Ch1LO.pdf
Lecture Outline, Chapter 1 Online FN 225, Powell
A. Macronutrients & Energy-Yielding Nutrients
1. ca
ohydrates (sugar, starch, fiber)
2. lipids (triglycerides, sterols, phospholipids)
3. protein
Of the above nutrients, what nutrients are the main fuel sources for the body?
A) Starch_, _Sugar_, Triglycerides.
Definition of a Calorie (kcal)- used to measure the energy in foods.
1 gram ca
ohydrate OR protein has 4 Calories (kcal) 1 gram fat has 9 Calories (kcal) (a gram is
about the weight of a paper clip).
Of the energy-yielding nutrients, which nutrient is considered to be the most energy dense?
A) Fats or lipids are the most energy dense nutrient that yield 9kcal per gram.
If a hot dog has 20 grams of fat, how many Calories are coming from fat in the hot dog?
A) Fats yield 9kcal / gram. Therefore, 20 grams of fats in a hot dog yield 20 x 9 = 180 calories.
B. Micronutrients
1. Vitamins. Examples: Vittamin A, D, E, K, B complex and C .
2. Minerals. Examples: Sodium, potassium, calcium, phosphorous and magnesium etc.
Which of these micronutrients can be
oken apart to yield energy for the human body?
A) Both the vitamins and minerals are not
oken apart to yield energy.
C. Organic Nutrients
Definition of an organic nutrient- A nutrient containing ca
on to ca
on and ca
on to
hydrogen bonds which can be
oken apart (also called burned) to release energy.
An element is a substance that can't be separated into smaller parts. Examples of elements
include ca
on, hydrogen, iron and calcium.
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According to the above definition, is C02 an organic substance? ______ Why or why not?
________
A) CO2 is an inorganic molecule. CO2 contains only one ca
on atom bound to 2 oxygen atoms.
Organic substances contain more than one ca
on atom and the bond between the atoms is
oken to release the energy. Therefore, CO2 is not an organic substance.
Which of the 6 categories of nutrients are organic?
1. Ca
ohydrates
2. Proteins
3. Fats
4. Vitamins.
The vitamins in our food ARE organic and contain energy. Why can't our bodies release this
energy that is in vitamins?
A) Vitamins are not
oken apart to release energy.
D. Inorganic Nutrients
Definition of an inorganic nutrient- A nutrient without a ca
on to ca
on or ca
on to hydrogen
ond and it cannot be
oken apart to release energy.
Which of the 6 categories of nutrients are inorganic? Water & Minerals
Why is vitamin A considered organic while iron is considered inorganic?
A) Vitamin A is organic because it contains ca
on and hydrogen atoms bonded together in its
structure. Iron is inorganic molecule as it does not contain ca
on atoms.
Your Turkey Cheese Frank fell into the ba
ecue and is now nothing but ash. Which of the six
categories of nutrients is this ash composed of? Minerals
What did the ca
ohydrates, proteins, fats & vitamins become?
1. CO2 2. Heat 3. Wate
IV....