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