NDFS 100 BYU EXAM #2: Questions
and Correct Answers| Updated
2026
What are the functions of fat in the body? *pillow*
energy fuel
energy stores
cell membranes
emergency reserve
padding (protect organs)
insulation
raw materials
What are the functions of fat in food?
nutrients
transport
energy
appetite
texture
satiety
sensory appeal
,True or False: Fat is the bodies major form of stored energy
true
T or F: Fat forms the major material of the cell membranes
true
T or F: Fat provides no nutrients
False; it provide essential fatty acids, fat-soluble vitamins, and other needed compounds.
What are the three types of lipids?
triglycerides, phospholipids, sterols
What is another name for triglycerides?
fatty acids
What is the structure of a triglyceride?
3 fatty acids + 1 glycerol molecule
,glycerol
3 carbons long - is backbone for triglycerides
function of triglyceride
its 95% of all fats in food and in the body
In what two ways do fatty acids differ from one another?
chain length and degree of saturation
T or F: the shorter chain fatty acids or more unsaturated ones are harder
False; they are softer
What do fatty acids in food do?
Influence the composition of fats in the body
What does it mean when a fatty acid is saturated?
every available bond from the carbon chain is holding a hydrogen atom
What does it mean when a fatty acid is unsaturated?
the fatty acid carbon chain has a place where hydrogens are missing
, What is it called on a carbon chain where a hydrogen is missing?
point of unsaturation
unsaturated fats have _______ bonds
double
What is a monounsaturated fatty acid?
the carbon chain contains just one point of unsaturation
What is a polyunsaturated fatty acid?
the carbon chain contains two or more points of unsaturation
What is polyunsaturated often abbreviated as?
PUFA
T or F: The more carbon atoms in a fatty acid, the longer it is
True
and Correct Answers| Updated
2026
What are the functions of fat in the body? *pillow*
energy fuel
energy stores
cell membranes
emergency reserve
padding (protect organs)
insulation
raw materials
What are the functions of fat in food?
nutrients
transport
energy
appetite
texture
satiety
sensory appeal
,True or False: Fat is the bodies major form of stored energy
true
T or F: Fat forms the major material of the cell membranes
true
T or F: Fat provides no nutrients
False; it provide essential fatty acids, fat-soluble vitamins, and other needed compounds.
What are the three types of lipids?
triglycerides, phospholipids, sterols
What is another name for triglycerides?
fatty acids
What is the structure of a triglyceride?
3 fatty acids + 1 glycerol molecule
,glycerol
3 carbons long - is backbone for triglycerides
function of triglyceride
its 95% of all fats in food and in the body
In what two ways do fatty acids differ from one another?
chain length and degree of saturation
T or F: the shorter chain fatty acids or more unsaturated ones are harder
False; they are softer
What do fatty acids in food do?
Influence the composition of fats in the body
What does it mean when a fatty acid is saturated?
every available bond from the carbon chain is holding a hydrogen atom
What does it mean when a fatty acid is unsaturated?
the fatty acid carbon chain has a place where hydrogens are missing
, What is it called on a carbon chain where a hydrogen is missing?
point of unsaturation
unsaturated fats have _______ bonds
double
What is a monounsaturated fatty acid?
the carbon chain contains just one point of unsaturation
What is a polyunsaturated fatty acid?
the carbon chain contains two or more points of unsaturation
What is polyunsaturated often abbreviated as?
PUFA
T or F: The more carbon atoms in a fatty acid, the longer it is
True
