Lecture 2 Flashcards
What part of fatty acid is hydrophobic and which part is hydophillic (polar)
methyl group and chain is hydrophobic
Carboxyl group is hydrophillic (polar)
Point of unsaturation means what is contained?
Double Bond
Triglyceride has what?
1 Glycerol backbone and 3 fatty acids with different chain lengths
What are waxes?
Esters of fatty acids and fatty alcohols
Storage form or retinol (vitamin A)?
retinyl ester
Most abundant retinyl esters
Oleic acid, linoleic acid, palmitic acid, stearic acid
Carbonyl structure
C=O
aldehyde
H-C=O
Conjugated fatty acids are usually tran found in what?
meat and meat product
Waxes are organic compounds consisting of what?
Long alkyl chain
How do you make an Alkyl gorup?
remove the H
LCFA are what type of alcohols?
primary
What is a cholesteryl ester?
Steroid nucleus with a fatty acid ester
7 functions of lipid
Energy storage Kcal provision insulation internal padding EFA cell membranes and lipoproteins steroid molecule precursor
Sterols are class of lipids derived from what?
Sterol Ring
In a phospholipid, the membrane portion is attached to what end?
Hydrophobic end
Cardiolipin is a phospholipid in the ____ mitochondrial membrane which is needed for what?
Inner
Energy metabolism
Failure in cariolipin results in what diseases?
Parkinsons Alzheimers Diabetes Anti-phospholipid syndrome cancer
What is an ether group
R-O-R
Difference between acyl and acetyl group?
acyl has carbonyl +fatty acid
acetyl has carbonyl + methyl group
How long is a short chain FFA
Medium chain FFA
LCFA
2-4
6-12
14–26
Fatty acid saturation and fatty acid length influence what?
Polarity
Water solubility
Melting point
What is the building block for fatty acid synthesis?
acetyl CoA
What are the 2 regulatory enzymes of fatty acid synthesis?
acetyl CoA Carboxylase, Fatty acid synthase
