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NUTRITION 251 EXAM 2 PENN STATE EXAM
PRACTICE QUESTIONS WITH VERIFIED
SOLUTIONS NEW MODIFIED TESTED AND
APPROVED!!
A polyunsaturated fatty acid has ______ double bonds in its structure.
Generally more ___________ at room temperature. --ANSWER--two
or more, liquid
The presence or absence of __________ and the ______ of them
creates different physical and functional characteristics --ANSWER--
of double bonds, location
composed of a 3-carbon glycerol backbone with three fatty acids
extending out from each of the carbons of glycerol --ANSWER--A
triglyceride
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A triglyceride is found in all foods containing ________ --ANSWER-
-Fat
Linolenic and linoleic acids are both --ANSWER--essential fatty
acids
Essential Fatty Acids (FA) cannot be___________ by the body --
ANSWER--made
Linoleic Acid and the Omega-6 Family (polyunsaturated) --
ANSWER---Can make arachidonic acid, which is a conditionally
essential fatty acid
-Must be supplied by food
-Can make EPA (eicosapentaenoic acid) and DHA (docosahexaenoic
acid), important for eyes, brain and heart
-Deficiency associated with depression, growth retardation,
reproductive failure and neurological problems
-supplied primarily by vegetable oils
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EPA and DHA are two long-chain omega-3 fatty acids that can be --
ANSWER--synthesized in the body's cells from linolenic acid
Rich sources of preformed EPA and DHA in foods: --ANSWER--
fatty fish (i.e. salmon), eggs from chickens fed omega-3 fatty acids
Why we needs fats/lipids --ANSWER--1) Insulation
2.Taste and Texture
3.Membranes of cells
4.Clotting
5.Slows gastric emptying
6.Absorbs fat-soluble vitamins
7.Sex Hormones
8.Energy (ATP)
9.Energy storage
10.Regulation of gene expression
NUTRITION 251 EXAM 2 PENN STATE EXAM
PRACTICE QUESTIONS WITH VERIFIED
SOLUTIONS NEW MODIFIED TESTED AND
APPROVED!!
A polyunsaturated fatty acid has ______ double bonds in its structure.
Generally more ___________ at room temperature. --ANSWER--two
or more, liquid
The presence or absence of __________ and the ______ of them
creates different physical and functional characteristics --ANSWER--
of double bonds, location
composed of a 3-carbon glycerol backbone with three fatty acids
extending out from each of the carbons of glycerol --ANSWER--A
triglyceride
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A triglyceride is found in all foods containing ________ --ANSWER-
-Fat
Linolenic and linoleic acids are both --ANSWER--essential fatty
acids
Essential Fatty Acids (FA) cannot be___________ by the body --
ANSWER--made
Linoleic Acid and the Omega-6 Family (polyunsaturated) --
ANSWER---Can make arachidonic acid, which is a conditionally
essential fatty acid
-Must be supplied by food
-Can make EPA (eicosapentaenoic acid) and DHA (docosahexaenoic
acid), important for eyes, brain and heart
-Deficiency associated with depression, growth retardation,
reproductive failure and neurological problems
-supplied primarily by vegetable oils
, Page |3
EPA and DHA are two long-chain omega-3 fatty acids that can be --
ANSWER--synthesized in the body's cells from linolenic acid
Rich sources of preformed EPA and DHA in foods: --ANSWER--
fatty fish (i.e. salmon), eggs from chickens fed omega-3 fatty acids
Why we needs fats/lipids --ANSWER--1) Insulation
2.Taste and Texture
3.Membranes of cells
4.Clotting
5.Slows gastric emptying
6.Absorbs fat-soluble vitamins
7.Sex Hormones
8.Energy (ATP)
9.Energy storage
10.Regulation of gene expression
