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Lipids > Lecture 2 > Flashcards

Lecture 2 Flashcards

1
Q

What part of fatty acid is hydrophobic and which part is hydophillic (polar)

A

methyl group and chain is hydrophobic

Carboxyl group is hydrophillic (polar)

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2
Q

Point of unsaturation means what is contained?

A

Double Bond

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3
Q

Triglyceride has what?

A

1 Glycerol backbone and 3 fatty acids with different chain lengths

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4
Q

What are waxes?

A

Esters of fatty acids and fatty alcohols

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5
Q

Storage form or retinol (vitamin A)?

A

retinyl ester

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6
Q

Most abundant retinyl esters

A

Oleic acid, linoleic acid, palmitic acid, stearic acid

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7
Q

Carbonyl structure

A

C=O

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8
Q

aldehyde

A

H-C=O

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9
Q

Conjugated fatty acids are usually tran found in what?

A

meat and meat product

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10
Q

Waxes are organic compounds consisting of what?

A

Long alkyl chain

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11
Q

How do you make an Alkyl gorup?

A

remove the H

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12
Q

LCFA are what type of alcohols?

A

primary

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13
Q

What is a cholesteryl ester?

A

Steroid nucleus with a fatty acid ester

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14
Q

7 functions of lipid

A 
Energy storage
Kcal provision
insulation
internal padding
EFA
cell membranes and lipoproteins
steroid molecule precursor
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15
Q

Sterols are class of lipids derived from what?

A

Sterol Ring

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16
Q

In a phospholipid, the membrane portion is attached to what end?

A

Hydrophobic end

17
Q

Cardiolipin is a phospholipid in the ____ mitochondrial membrane which is needed for what?

A

Inner

Energy metabolism

18
Q

Failure in cariolipin results in what diseases?

A 
Parkinsons
Alzheimers
Diabetes
Anti-phospholipid syndrome
cancer
19
Q

What is an ether group

A

R-O-R

20
Q

Difference between acyl and acetyl group?

A

acyl has carbonyl +fatty acid

acetyl has carbonyl + methyl group

21
Q

How long is a short chain FFA
Medium chain FFA
LCFA

A

2-4
6-12
14–26

22
Q

Fatty acid saturation and fatty acid length influence what?

A

Polarity
Water solubility
Melting point

23
Q

What is the building block for fatty acid synthesis?

A

acetyl CoA

24
Q

What are the 2 regulatory enzymes of fatty acid synthesis?

A

acetyl CoA Carboxylase, Fatty acid synthase

Lipids (5 decks)

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