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BCH210 Midterm 2| 300 Questions| With Complete Solutions
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types of lipids (purpose) correct answer: storage, structural, and signalling fatty acid chemical structure and charge correct answer: - fatty part is the carbon chain - acid part is carboxyl group (-COOH) - negatively charged which conformations of saturated fatty acids are most stable? ...

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  • August 14, 2023
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BCH210 Midterm 2| 300 Questions| With
Complete Solutions
types of lipids (purpose) correct answer: storage, structural, and
signalling

fatty acid chemical structure and charge correct answer: - fatty
part is the carbon chain
- acid part is carboxyl group (-COOH)
- negatively charged

which conformations of saturated fatty acids are most stable?
correct answer: - anti conformation
- extended conformation

unsaturated fatty acids correct answer: double bonds are almost
always in cis conformation which results in kinks in structure

mono-unsaturated fatty acids correct answer: one double bond

octadec-a-noic acid correct answer: saturated fatty acid with all
single bonds

octadec-e-noic acid correct answer: unsaturated fatty acid with
ONE double bond

poly-unsaturated fatty acid correct answer: two or more double
bonds

,octadec-adie-noic acid correct answer: unsaturated fatty acid
with TWO double bonds

fatty acid properties/trends correct answer: - more carbons,
higher melting point
- more double bonds, lower melting point
- number of double bonds has a lower melting point even if it
has more carbons

what non-covalent interaction is involved in packing of fatty
acids? correct answer: van der Waals packing interactions

the storage lipid correct answer: triacylglycerols

where are triacylglycerols primarily found? correct answer:
adipocyte cells (fat cells)

structure of triacylglycerols correct answer: glycerol with three
fatty acid chains

linkages important in triacylglycerols correct answer: ester
linkages

classes of triacylglycerols correct answer: - simple and mixed
(based on fatty acid chains)

Tristearin correct answer: example of simple triacylglycerol

example of mixed triacylglycerol correct answer: Palmitoleic
(cis), Myristic (short), Stearic (long)

,what disease are trans-fatty acids correlated with? correct
answer: cardiovascular disease (because trans conformation
make packing easy)

three types of membrane lipids (polar) correct answer:
phospholipids, glycolipids, sterols

types of phospholipids correct answer: glycerophospholipids
and sphingolipids

type of glycolipids correct answer: glycosphingolipids

type of sterols correct answer: cholesterol

polar head groups of membrane lipids correct answer: - OH
- sugar
- phosphate

membrane lipids with polar head groups correct answer: -
glycerophospholipids
- sphingolipids
- glycosphingolipids

Most abundant membrane lipids in cells? correct answer:
glycerophospholipids

glycerophospholipid structure correct answer: fatty acyl chains,
glycerol backbone, phosphate, head group

glycerophospholipid constants correct answer: glycerol and
phosphate

, glycerophospholipid variables correct answer: - fatty acid tails
(length, degree of saturation)
- head groups (size, charge)

neutral glycerophospholipids (2) correct answer: -
phosphatidylcholine (PC)
- phosphatidylethanolamine (PE)

anionic glycerophospholipids (4) correct answer: -
phosphatidylglycerol
- phosphatidylserine
- diphosphatidylglycerol
- phosphatodylinositol

what is diphosphatidylgylcerol found in? correct answer: the
mitochondria in the heart

second major class of membrane lipids? correct answer:
sphingolipids

sphingolipid structure correct answer: based on sphingosine
backbone (NOT glycerol)

linkage important in sphingolipid? correct answer: amide
linkage

where are sphingolipids degraded? correct answer: in lysosomes

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