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