Navigation » List of Schools » West Los Angeles College » Chemistry » Chem 221 – Biochemistry for Science Majors » Fall 2021 » L13 Lipids
Below are the questions for the exam with the choices of answers:
Question #1
A Triglycerides are formed through hydrolysis, which results in the loss of H2O molecules.
B Triglycerides are formed through hydrolysis, which results in the production of H2O molecules.
C Triglycerides are formed through dehydration synthesis, which results in the addition of H2O molecules.
D Triglycerides are formed through dehydration synthesis, which results in the loss of H2O molecules.
Question #2
A FALSE
B TRUE
Question #3
A glycerol
B Water
C Waxes
D Phospholipids
Question #4
A oxidation
B hydration
C hydrogenation
D hydrolysis
Question #5
A Phospholipids have three fatty acids and fats have two
B Phospholipids have two fatty acids and fats have three
C Phosphoplipids do not have glycerol
D Fats have glycerol
Question #6
A double
B ionic
C polar
D proton
Question #7
A hydrophobic tails; hydrophilic heads
B hydrophilic heads; hydrophobic tails
C The first and second answers are both correct
D hydrocarbon chains; carboxylic acid groups
E carboxylic acid groups; hydrocarbon chains
Question #8
A fatty acids and glycerol
B salts of fatty acids and glycerol
C glycerophospholipids
D the esters of fatty acids
E salts of fatty acids
Question #9
A wax
B glycerophospholipid
C fat
D steroid
Question #10
A C2H6O2
B C3H8O3
C CH3OH
D C4H10O4
Question #11
A The hydrophobic tail of the soap bonds to water.
B The soap froths but does not actually bond with the grease.
C The hydrophobic tail of the soap bonds to grease.
D The hydrophilic head of the soap bonds to grease.
Question #12
A Fatty acids and waxes
B cholesterol
C waxes
D Glycerophospholipids, cholesterol and fatty acids
E cholesterol and waxes
Question #13
A FALSE
B TRUE
Question #14
A FALSE
B TRUE
Question #15
A FALSE
B TRUE
Question #16
A Glycerophospholipids have only one glycerol, on polar head group, and one fatty acid tail
B Glycerophospholipids are a subset (subgroup) of phospholipids
C Glycerophospholipids can sometimes be sphingolipids, depending on the bonds in their head groups
D Glycerophospholipids contain only saturated fatty acids
Question #17
A saturated fatty acids
B unsaturated fatty acids
C none of these
D saturated and unsaturated fatty acids
Question #18
A hydrolysis
B hydrogenation
C esterification
D dehydration
E saponification
Question #19
A II and IV
B I and III
C I and IV
D II and III
E I and II
Question #20
A esters of glycerol with three predominantly saturated fatty acids
B esters of glycerol with three predominantly unsaturated fatty acids
C esters of glycerol with three identical saturated fatty acids
D esters of glycerol with three identical unsaturated fatty acids
E simple esters of long chain alcohols and fatty acids
Question #21
A Energy storage for animals
B Physical protection of mammalian ears
C Prevention of water loss by leaves
D Waterproofing of feathers in shore birds
E Structural materials in beehives
Question #22
A ethers
B carboxylic acids
C alcohols
D esters
E ketones
Question #23
A CH3CH=CHCH2COOH
B CH3(CH2)14COOH
C (CH3)2CH(CH2)3COOH
D CH3(CH2)7CH=CH(CH2)7COOH
E None of the above
Question #24
A (CH3)2CH(CH2)3COOH
B CH3COOH
C CH2=CHCOOH
D CH3(CH2)7CH=CH(CH2)7COOH
E None of the above
Question #25
A trans
B L
C cis
D D
Question #26
A the physical property of solubility in nonpolar organic solvents.
B a common structure consisting of long hydrocarbon chains.
C the presence of at least one amine group and one carboxylic acid group on each molecule.
D the presence of many hydroxyl groups and at least one carbonyl group.
E the physical properties of odor, color, and melting point within certain guidelines.
Question #27
A polymers of diacids and diamines.
B polymers of α-amino acids.
C six-membered rings with delocalized electrons.
D soluble in non-polar solvents.
E polyhydroxy aldehydes or ketones, or compounds which produce those when hydrolyzed.
Question #28
A nucleic acids
B carbohydrates
C lipids
D proteins
E amino acids
Question #29
A steroids
B saturated fats
C chitin
D phospholipids
E fatty acids
Question #30
A hydrophilic heads and hydrophobic tails
B long water-soluble carbon chains and positively charged functional groups
C positively charged functional groups
D long water-soluble carbon chains
Question #31
A insoluble in water
B partially soluble in water
C soluble in water
D soluble in water at elevated temperature
Question #32
A Amphipathic
B Nonpolar, charged
C Nonpolar, uncharged
D Polar, uncharged
E Polar, charged
Question #33
A triesters of glycerol and three long chain saturated fatty acids
B
C sphingolipids
D triesters of glycerol and palmitic acid
E esters of single fatty acids with long-chain alcohols
F None of the above
Question #34
A a glycerol backbone, three fatty acids , and amide linkages between the fatty acids and the glycerol
B a glycerol backbone and amide linkages between the fatty acids and the glycerol
C a glycerol backbone and three fatty acids
Question #35
A Glycolipids
B Beeswax
C Triacylglycerols
D Sphingolipids
E All of the above contain or are derived from fatty acids.
Question #36
A amphiprotic
B amphoteric
C amphipathic
D amphibian