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NUTR 251 Study Guide Questions And Answers Latest Update
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NUTR 251 Study Guide Questions And Answers Latest Update
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NUTR 251 Study Guide Questions And AnswersLatest Update
1. Be able to distinguish differences and similarities between: Lipids (Chapter 5)
o saturated vs. monounsaturated vs. polyunsaturated - correct answers Beef,Meat ,Dairy ,plam cocoil (saturated)
-single bond Solid fats
canola olive oil,milk ,beef , nuts protein (monounsaturated)
-double bond (liquid at room temp)
Polyunsaturated
2+ double bonds
2. Lipids provide ______ kilocalories/gram. Lipids (Chapter 5) - correct answers 9
3.Lipids (Chapter 5) Identify foods that are rich sources for saturated, monounsaturated, and polyunsaturated fatty acids
(both omega 3 and omega 6 fatty acids). - correct answers Beef,Butter ,Diary, products ,Tropical oil , Canola Oil,nuts
/Animal fats ,nuts
4.Lipids (Chapter 5) Which types of foods are most likely to contain trans fatty acids? Do trans fatty acids occur naturally
in foods? - correct answers Processed food + fast food
5. Describe in words the structures of linolenic acid and linoleic acid. Why are they called omega 3 and omega 6 fatty
acids? Make note of where the first double bonds occur in their structure. - correct answers linolenic (3) doble bond on
3rd Carbon
linoleic (6) double bond on 6th Carbon
From the omega end
, 6.Lipids (Chapter 5) We get plenty of _________ in our diet, but we could probably do better at getting
_________________ into our diet. Fill in the blanks with either linoleic or linolenic acid. List rich food sources of these 2
fatty acids. - correct answers We get plenty of Omega 6 (linoleic) leafy green,grains,nuts
could do better at getting Omega 3 (linolenic) salmon,walnuts,soybean
7.Lipids (Chapter 5) What are the roles of EPA, DHA and their corresponding prostaglandins in reducing risk of heart
disease? EPA and DHA are made from _______________ but are called long chain omega 3 fatty acids because their
carbon chain lengths are __________. What is the richest food source of EPA and DHA in the US diet? What is an
eicosanoid? - correct answers Roles of EPA: linolenic -> EPA-> cicosanoids
|
DHA
Prostaglandins in reducing risk of heart disease: Decrease clots/ Inflammation
EPA and DHA: Linolenic acid
Carbon lengths 20-22
Richest food source of EPA and DHA: salmon
Eicosanoid: molecules have hormones like activty
-controls inflammation immunity and CNS
8.Lipids (Chapter 5) Describe a typical phospholipid and list phospholipids' functions in the body. - correct answers
Partially macrophobic + hydrophillic - keep water separate from cells
9.Lipids (Chapter 5) Is cholesterol an essential nutrient? What kinds of foods contain cholesterol? - correct answers no it
can be made by liver and animal sources
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