uoft biochemistry 210 questions with complete solu
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University of Toronto (U of T
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chem 210
CHEM 210
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Uoft Biochemistry 210 Questions With
Complete Solutions
Three types of lipids correct answer: storage lipid(fat),
structural lipids(membrane) and signaling lipids(hormaones)
storage lipids are correct answer: triacyl glyceride
structural lipids include correct answer: phospholipid,
sphingolipid, glycolipids and steroids
signaling lipids include correct answer: eicosonoids and steroids
what are the core building blocks of lipids correct answer: fatty
acids
a fatty acyl chain is _ if it contains only single bonds, but _ if it
has one or more double bonds correct answer: saturated,
unsaturated
Saturated Fatty acid adopt _ conformation correct answer: anti,
trans
Double bonds in fatty acids are _ conformation correct answer:
cis, gauche
the melting temp _ with increase in carbon and _with increase
with double bond correct answer: increase, decrease
, Fatty acids are stored as _ correct answer: triacylglycerols
The 2 types of triacylglycerol are: correct answer: simple (same
tail length)and mixed (different tail length and can be saturated
or unsaturated)
In membranes fatty acids are attached to correct answer: polar
head groups1) glycerophosholipids 2) sphingolipids 3)
glycoshpingolipids
to make a glycerophosholipid fatty acids are esterfied at the
correct answer: 1,2 position of the sn-glycerol-3-phosphate
List the neutral phospholips correct answer:
1)phosphotidilcholine and phosphotidilethanolamine
In sphingolipids, the structure is based of of_ and fatty acids are
attached by what kind of likage? correct answer: sphingosine,
amide linkage.
The polar head groups are esterfied
How can cholesterol modulate membrane fluidity? correct
answer: 1) Disrupt packing of hydrocarbon tails
2) Slow motion of hydrocarbon tails
The two types of signalling lipids come from: correct answer:
1) steroids-precursor for animal lipids
2)phospholipids-the break down of certain structural lipids by
hydrolyzing phospholipase, can cause chemical signals.
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