BICH 409 Exam 3 Test Questions and
All Correct Answers 2025-2026
Updated.
Classes of Lipids - Answer Fatty Acids • Triacylglycerols •Glycerophospholipids •
Sphingolipids • Waxes • Isoprene-based lipid
Fatty Acids nomenclature - Answer n = No double bond
(delta)- which carbon has double
Cis- Acyl group is the same side
Trans- Acyl group is opposite sides
Lauric Acid - Answer 12:0
laurate - Answer 12:0
mystic acid - Answer 14:0
palmitic acid - Answer 16:0
stearic acid - Answer 18:0
Arachidic acid - Answer 20:0
palmitoleic acid - Answer 16:1 delta 9
heart health
oleic acid - Answer 18:1 delta 9
heart health
olive oil
linoleic acid - Answer 18:2 (9,12)
essential and from diet
alpha-linolenic acid - Answer 18:3 (9,12,15)
,essential fatty acid
gamma-linolenic acid - Answer 18:3 (6,9,12)
non essential
eicosapentaenoic acid (EPA) - Answer 20:5 (5,8,11,14,17)
arctic fish oild
heart health
omega 3
resolve inflammation
docosahexaenoic acid (DHA) - Answer arctic fish oild
heart health
omega 3
resolve inflammation
Omega fatty acid - Answer count from opposite side
Linoleate - Answer omega 6
amphipathic - Answer Molecules are said to be this when it has regions that are both
hydrophilic and hydrophobic.
fatty acids - Answer Building Blocks of Lipids
Triglycerols - Answer stores excess metabolic energy
Glycerophospholipids - Answer phospholipids that contain a glycerol backbone
Waxes - Answer A type of lipid molecule consisting of one fatty acid linked to an alcohol;
functions as a waterproof coating on many biological surfaces such as apples and other fruits.
Isoprene-based lipids - Answer cholesterol, acetyl coenzyme A
omega-3 fatty acids - Answer resolve inflamation
, these are good for you
omega 6 - Answer pro-inflammatory
does not help heart health
want to decrease intake of this
Unsaturated Fatty Acids - Answer Cis-double bonds create 30o bends.• Unsaturated fatty
acids pack less tightly than saturated fatty acids.• Unsaturated fatty acids have reduced Van der
Waal's interactions.• Increased Fluidity• Which is important for membranes.
structural consequences of unsaturation - Answer Saturated fatty acids pack tightly and form
more rigid and organized aggregates.• Unsaturated fatty acid chains bend and pack in a less
ordered way with greater potential for motion.
trans fats - Answer behave like saturated fatty acids
does not produce kink
VDW interactions increase
increase melting point
decrease fluidity
competative inhibitor of omega 9 mechanism
elevated cholesterol
that inhibits biosynthesis
fluidity - Answer melting point incrases
fluidity incrases
longer= higher melting point= lower fluidity
if more cis double bonds decrease mp and increase fluidity
Ester formation - Answer wax
hydrophobic
water proofer
long chain fatty alcohol connected to long chain fatty acid
Waxes defininition - Answer Esters of long-chain alcohols with long-chain fatty acids.• Highly
insoluble• Animal skin and fur are wax-coated• Bird feathers also wax-coated• Apples are wax-
coated• Leafs of many plants are wax coated.
All Correct Answers 2025-2026
Updated.
Classes of Lipids - Answer Fatty Acids • Triacylglycerols •Glycerophospholipids •
Sphingolipids • Waxes • Isoprene-based lipid
Fatty Acids nomenclature - Answer n = No double bond
(delta)- which carbon has double
Cis- Acyl group is the same side
Trans- Acyl group is opposite sides
Lauric Acid - Answer 12:0
laurate - Answer 12:0
mystic acid - Answer 14:0
palmitic acid - Answer 16:0
stearic acid - Answer 18:0
Arachidic acid - Answer 20:0
palmitoleic acid - Answer 16:1 delta 9
heart health
oleic acid - Answer 18:1 delta 9
heart health
olive oil
linoleic acid - Answer 18:2 (9,12)
essential and from diet
alpha-linolenic acid - Answer 18:3 (9,12,15)
,essential fatty acid
gamma-linolenic acid - Answer 18:3 (6,9,12)
non essential
eicosapentaenoic acid (EPA) - Answer 20:5 (5,8,11,14,17)
arctic fish oild
heart health
omega 3
resolve inflammation
docosahexaenoic acid (DHA) - Answer arctic fish oild
heart health
omega 3
resolve inflammation
Omega fatty acid - Answer count from opposite side
Linoleate - Answer omega 6
amphipathic - Answer Molecules are said to be this when it has regions that are both
hydrophilic and hydrophobic.
fatty acids - Answer Building Blocks of Lipids
Triglycerols - Answer stores excess metabolic energy
Glycerophospholipids - Answer phospholipids that contain a glycerol backbone
Waxes - Answer A type of lipid molecule consisting of one fatty acid linked to an alcohol;
functions as a waterproof coating on many biological surfaces such as apples and other fruits.
Isoprene-based lipids - Answer cholesterol, acetyl coenzyme A
omega-3 fatty acids - Answer resolve inflamation
, these are good for you
omega 6 - Answer pro-inflammatory
does not help heart health
want to decrease intake of this
Unsaturated Fatty Acids - Answer Cis-double bonds create 30o bends.• Unsaturated fatty
acids pack less tightly than saturated fatty acids.• Unsaturated fatty acids have reduced Van der
Waal's interactions.• Increased Fluidity• Which is important for membranes.
structural consequences of unsaturation - Answer Saturated fatty acids pack tightly and form
more rigid and organized aggregates.• Unsaturated fatty acid chains bend and pack in a less
ordered way with greater potential for motion.
trans fats - Answer behave like saturated fatty acids
does not produce kink
VDW interactions increase
increase melting point
decrease fluidity
competative inhibitor of omega 9 mechanism
elevated cholesterol
that inhibits biosynthesis
fluidity - Answer melting point incrases
fluidity incrases
longer= higher melting point= lower fluidity
if more cis double bonds decrease mp and increase fluidity
Ester formation - Answer wax
hydrophobic
water proofer
long chain fatty alcohol connected to long chain fatty acid
Waxes defininition - Answer Esters of long-chain alcohols with long-chain fatty acids.• Highly
insoluble• Animal skin and fur are wax-coated• Bird feathers also wax-coated• Apples are wax-
coated• Leafs of many plants are wax coated.
