Term
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Definition
- A chemical substance in food
- Used by the body for growh, development, and maintenance (health)
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Term
What are the 6 classes of nutrients? |
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Definition
- Carbs
- Fats
- Proteins
- Vitamins
- Minerals
- Water
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Term
Organic nutrients and inorganic nutrients are distinguished how? |
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Definition
Organic nutrients contain Carbon
Inorganic nutrients do NOT contain Carbon |
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Term
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Definition
- An organic chemical substance in food that is
- Required in small amounts by the body and
- Has specific roles in the body
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Term
What are the 2 groups of vitamins and what are their characteristics? |
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Definition
- Fat-Soluble Vitamins
- Carried in the lipid portion of food
- Digested and absorbed with fats
- Stored in body fat and liver
- Water-Soluble Vitamins
- Carried in acqueous portion of food
- Not stored in the body
- More easily absorbed than fat-soluble vitamins
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Term
- What vitamins are fat-soluble?
- What vitamins are water-soluble?
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Definition
- Fat-Soluble Vitamins
- Vitmains A, D, E, K
- Water-Soluble Vitamins
- B Vitamins
- Vitamin C
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Term
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Definition
An inorganic chemical substance required by the body in small amounts that has specific roles in the body |
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Term
- Define and then name the macronutrients?
- Define and then name the micronutrients?
- What's the tricky nutrient to place in a group
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Definition
- Macronutrients are nutrients that are required in large amounts (grams) by the body
- Carbs 3. Fat
- Proteins 4. Water
- Micronutrients are nutrients that are required in small amounts (micrograms) by the body
- Vitamins
- Minerals
- Ca++ is considered a micronutrient but we require 1g
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Term
- What is an essential nutrient?
- What is a non-essential nutrient?
- Which group is glucose placed in?
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Definition
- A nutrient that is required by the body but must be obtained from the diet
- Either can't make it or
- Can't make enough to meet the body's needs
- A nutrient that is required by the body but can be synthesized by the body
- Non-essential
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Term
Describe what an amino acid does and what an AA is comprised of |
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Definition
- AAs are the building blocks of proteins
- Comprised of
- Amine Group (NH3+)
- Carboxyl Group (C=O)
- R Side Group
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Term
What are the essential AAs |
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Definition
PVT TIM HALL
- Phenylalanine
- Valine
- Tryptophan
- Threonine
- Isoleucine
- Methionine
- Histidine
- Arginine (can be synthesized)
- Leucine
- Lysine
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Term
- What is a conditionally indispensable Amino Acid?
- How are they made?
- Who are we concerned about getting these?
- What is a dispensable AA?
- Who are we concerned about getting these?
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Definition
- An AA that becomes essential with elevated need or inadequate supply of precursors
- Made from other AAs via transaminations / deaminations
- Vegetarians
- An AA that is required but readily synthesized by the body
- We are concerned about Dispensable AAs for people who don't get enough protein in general
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Term
- What is a complete protein?
- What food sources are a complete protein?
- What is an incomplete protein?
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Definition
- A protein source that contains sufficient amounts (and proportions) of the 10 essential AAs
- Usually animal sources. Also, soy and quinoa
- A protein source that is lacking sufficient amounts of 1 or more of the 10 essential AAs
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Term
- What is a Limiting Amino Acid?
- Examples?
- What are Complementary Proteins
- examples?
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Definition
- The essential AA that is low or missing in an incomplete protein source
- Wheat is missing lysine. Legumes are missing methionine
- Protein sources that represent a complete protein source when combined
- Rice/beans. Corn/beans. Wheat/legumes
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Term
- What is a Chronic Disease?
- Examples?
- What is a Deficiency Disease?
- Are Chronic Diseases and Deficiency Diseases completely separate diseases?
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Definition
- An incurable disease that usually develops over a long period of time.
- Often due to excessive nutrient intake if it is nutrition-related
- Heart disease, Diabetes, Cancer
- A disease that develops due to the lack of an essential nutrient
- No. Deficiency Diseases can be reversed if caught early AND can become chronic (ex- osteoporosis)
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Term
- What are phytochemicals?
- Are they good or bad
- What is a functional (or neutraceutical) food?
- What are some examples?
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Definition
- Plant chemicals
- They are typically referred to as beneficial
- A food that naturally contains (or is formulated to contain) substantial amounts of nutrients that are beneficial to human health.
- Ex
- Calcium-fortified organge juice
- Yogurt (with live bact. cultures)
- Soy milk, tofu
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Term
- What are prebiotics? Example?
- What are probiotics? Example?
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Definition
- Compounds that foster growth of "good" bacteria in the GI tract
- Often a substrate for the bacteria (ex- fiber)
- Live cultures of "good" bacteria that are placed in a food source
- Ex- Yogurt with live bacteria
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Term
- What is a fortified food?
- What is an enriched food?
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Definition
- Food that contains nutrients at higher levels than what naturally occurs
- Food that has had nutrients added back after being taken out during processing
- To be enriched, nutrients first had to be taken out
- Usually, you don't get all the good stuff back
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Term
- Organic food
- What are the essential FAs?
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Definition
- Foods that are grown under specific conditions concerning
- Pesticides
- Hormones
- Fertilizers
- Bioengineering
- Animal care, etc.
- Essential FAs
- Alpha-Linolenic Acid (Omega-3)
- Linoleic Acid (Omega-6)
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Term
- What is a fatty acid?
- Don't forget, nutrients are: what?
- What is a Saturated FA?
- What is a Monounsaturated FA?
- What is a Polyunsaturated FA?
- Label from healthiest to least healthy: Sat FA, Monounsat FA, Polyunsat FA
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Definition
- A Carbon chain with an acid end (COOH) and a methyl end (CH3)
- Nutrients ARE chemicals
- Sat FA = A FA with no C=C
- Monounsat FA = A FA with 1 C=C
- Polyunsat FA = A FA with more than 1 C=C
- Monounsat → Polyunsat → Sat
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Term
- How are most of our dietary lipids packaged? (95%)
- Describe this molecule
- What is Hydrogenated Oil?
- What is Partially Hydrogenated Oil?
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Definition
- As Triglycerides
- 3 FAs attached to a glycerol backbone
- Polyunsaturated oil that has been processed to make saturated oil
- Adds Hs (called plastic fat)
- Oil that is hydrogenated but the process is not completed
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Term
- What is Trans Fatty Acid?
- What is it associated with?
- Trans Fatty Acids look most like what?
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Definition
- Unsaturated bonds (in partially hydrogenated oils) that are in the trans configuration
- Associated with serum cholesterol
- Chemically similar to saturated fats (because they're both linear / without a kink)
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Term
- What is Cholesterol?
- How do we get Cholesterol?
- What are Omega-3 Fatty Acids?
- What increases Cholesterol production?
- What is Omega-6 Fatty Acid?
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Definition
- A waxy lipid that is required by the body and is part of every cell
- Livery synthesizes plenty, but it is in diet, too
- A FA with its first double bond after the 3rd C from the omega end (not the carboxyl)
- Saturated Fats and Trans Fats
- A FA with its first double bone after the 6th C from the omega end
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Term
- Omega-3 and Omega-6 FA derivatives are classified as what?
- What are the omega-3 derivatives?
- What are the omega-6 derivatives?
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Definition
- PUFAs (Polyunsaturated FAs)
- Omega-3 derivative
- Eicosapentaenoic Acid (EPA)
- Docosahexaenoic Acid (DHA)
- Omega-6 derivatives
- Arachidonic Acid (ARA)
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Term
What are some functions of the Essential Fatty Acids |
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Definition
- Skin Integrity
- Blood Cholesterol Regulation
- Growth (esp. Omega-3)
- Gene Expression
- Immune Function
- Blood Platelet Aggregation (DHA/EPA)
- Prostoglandin Synthesis
- Cell Membrane Fluidity
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Term
- If you want to change your Omega-3 : Omega-6 ratio, what food sources should you eat?
- Why these?
- What won't change your ratio? Why?
- While both Omega-3s and 6s are essential, we get more than we need of which one?
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Definition
- Fatty Fish or Canola Oil or Walnuts or Flaxseed Oil
- Thes foods are good sources of Omega-3s
- Soybean Oil / Wheat Germ. These compounds also contain a lot of Omega-6 FAs
- Omega-6 FAs
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Term
What are some good sources for preformed DHA and EPA? |
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Definition
Fatty Fish
- Herring
- Mackerel
- Halibut
- Salmon
- Canned Tuna
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Term
- What is a monosaccharide?
- What are the 3 monosaccharides?
- What is a disaccharide?
- What are the major disaccharides and their constituents?
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Definition
- 1 sugar unit
- 3 monosaccharides
- Glucose
- Fructose
- Galactose
- 2 sugar subunits linked together
- 3 Disaccharides
- Sucrose= glucose + fructose
- Maltose= 2 x glucoses
- Lactose= glucose + galactose
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Term
- What is starch
- What are the major starch forms?
- What is Dietary Fiber?
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Definition
- Starch is many glucose subunits linked together
- Major Staches
- Amylose- A long chain
- Amylopectin- Branched
- Fiber is a dietary carbohydrate that humans cannot breakdown because we are missing the requisite enzymes
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Term
- What is amylase?
- Where is amylase produced?
- What does amylase do?
- What is lactase?
- Where it lactase produced?
- What does lactase do?
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Definition
- A digestive enzyme
- Produced in salivary glands and the pancreas
- Breaks down starch into glucose subunits
- A digestive enzyme
- Produced in the brush border of the intestinal tract
- Breaks down lactose into glucose + galactose
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Term
- What happens to dietary fiber?
- What are the 2 types of fiber?
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Definition
- It is broken down by enzymes produced by intestinal bacteria
- Fiber
- Soluble Fiber- A water soluble carb that bacteria readily ferments
- Insoluble Fiber- Not easily fermented by bacteria
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Term
- What is Soluble Fiber good for?
- What are 2 sources for Soluble Fiber?
- What is Insoluble Fiber good for?
- What are 2 sources of Insoluble Fiber?
- What is the key to fiber intake?
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Definition
- Beneficial for Heart Health
- Oats and Beans
- Beneficial for Gut Health
- Wheat and Cellulose
- Don't get all of your fiber from 1 source
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Term
- What is a Resistant Starch?
- How is it categorized?
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Definition
- A starch with a structure that impedes its break down by digestive enzymes
- It is slowly broken down (or sometimes not broken down) to glucose
- Categorized as a Fiber because we don't break it down but GI bact do
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Term
- What is Glycemic Index?
- What's important about Glycemic Index?
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Definition
- A measure of how quickly a food raises blood glucose
- Glycemic Index for 1 food is not as helpful as your overall dietary pattern
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Term
- What is Dietary Reference Intakes (DRIs)?
- What Reference do you aim for?
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Definition
- An umbrella term for the types of recommended intakes (RDA, AI, EAR, and UL)
- The Recommended Dietary Allowance or Adequate Intake. Nutrients have 1 or the other but not both
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Term
- What is RDA
- What is AI
- What is EAR
- What is UL
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Definition
- Recommended Dietary Allowance
- Meets most people's needs
- Adequate Intake
- Less scietific but should still meet your needs
- Estimated Average Requirement
- Upper Limit
- Possible adverse effects if more than UL is taken in.
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Term
- MyPyramid is used for what?
- What organization developed MyPyramid?
- What are Dietary Guidelines used for?
- What organization developed Dietary Guidelines?
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Definition
- To promote balance and prevent deficiencies
- USDA / DHHS
- To promote health and prevent chronic disease
- USDA / DHHS
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Term
- A Food Label is used to do what?
- What is found on Food Labels?
- What organization developed the Food Label
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Definition
- To evaluate products before purchase
- Daily Values- usually based on a 2000-calorie diet
- FDA / DHHS
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