questions well answered 2025/2026
lipids - correct answer ✔✔a diverse group of compounds, Category of macronutrient is referred
to as FAT in the DRIs
lipids contain - correct answer ✔✔carbon, oxygen, and hydrogen
lipid is hydrophobic which means - correct answer ✔✔Insoluble in water; soluble in organic
solvents.
Gives lipids unique roles in body
AMDR recommends __% of fat for healthy adults everyday - correct answer ✔✔20-35%
lipid bodily functions - correct answer ✔✔Energy source and storage Insulation
Satiety (slow gastric emptying) Structural components of cell membranes
Synthesis of bile acid, vitamin D, steroids, & eicosanoids
Transport of fat-soluble nutrients in the blood
classification of lipids - correct answer ✔✔triglyceride, phospholipid and cholesteryl ester
simple lipids - correct answer ✔✔Fats or triglycerides
Contain glycerol and fatty acids; formed by dehydration synthesis
examples: monoglycerides, diglycerides, triglycerides
,monoglyceride - correct answer ✔✔a glycerol molecule with one fatty acid attached
diglyceride - correct answer ✔✔glycerol + 2 fatty acids
sterol esters - correct answer ✔✔cholesterol + fatty acid esters
ester 5 bond on the free FA
phospholipid - correct answer ✔✔a lipid that contains phosphorus and that is a structural
component in cell membranes
derived lipids - correct answer ✔✔sterols (choelestrol)
when we store fat we are storing it in the form - correct answer ✔✔triglycerides
cholesterol (sub-category of sterol) - correct answer ✔✔the sterol form of a lipid found in the
human body
important for sex steroids and vitamind D
not used for energy production
compounds lipids - correct answer ✔✔phospholipids, glycolipids, lipoproteins
contain something other than O, C or H
lipoprotein structure - correct answer ✔✔Spherical particles with nonpolar neutral lipids
(triglycerides, phospholipid, cholesetrol and cholesteryl esters) in their core and more polar
amphipathic lipids (phospholipids and free cholesterol) at their surface
They also contain one or more specific proteins, called apolipoproteins, on their surfaces.
,spherical particle contains of lipoprotein - correct answer ✔✔Generalized structure of a plasma
lipoprotein.
- neutral lipids (TAGs & CE) in interior
-phospholipids, cholesterol, & protein at the surface.
lipoproteins contain the same components but in different - correct answer ✔✔proportions
lipoproteins are formed by - correct answer ✔✔phospholipid surrounding the structure
lipoproteins can carry lipids through water because - correct answer ✔✔the phosphate is on
the outside
lipid structure - correct answer ✔✔structure --> function --> health
fatty acids - correct answer ✔✔simplest of the lipids-hydrocarbon chain of varying lengths
-amphipathic with a non-polar, hydrophobic tail and polar hydrophilic heads
lipids are not generally water-soluble due to - correct answer ✔✔the large portion of their
structure that is hydrocarbon
fatty acid has a - correct answer ✔✔non-polar / hydrocarbon tail and a polar (hydrophilic) head
group
fatty acids structure - correct answer ✔✔carboxylic acids with hydrocarbon chains
contain from 4 to 36 carbons
natural fatty acids have an even number of carbons and are unbranched
saturated chain tends to adopt extended conformations
, two ends of a fatty acid - correct answer ✔✔-the carboxylic, delta or alpha end and the methyl
or omega end
stearic acid - correct answer ✔✔18:0
zero double bonds
animal fat, chocolate
long chain FA
most common carbon chain in foods - correct answer ✔✔long chain fatty acid
≥14 carbons is most important nutritionally/functionally
Take longer to digest, absorb, transport than short- or medium-chain
structure of fatty acids vary by: - correct answer ✔✔Length of the carbon chain: (most
common: 12-24C)
short chain fatty acid - correct answer ✔✔equal or less than 8C
medium chain fatty acid - correct answer ✔✔8-12 carbons
long chain fatty acid - correct answer ✔✔more than 12 carbons
caprylic acid - correct answer ✔✔8 carbons
coconut oil
capric acid - correct answer ✔✔10 carbons
coconut oil