Lecture 13: Lipids Flashcards

0
Q

Stearate

A

Non-essential fatty acids
n-Octadecanoate
0 double bonds

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1
Q

Palmitate

A

Non-essential fatty acid
n-Hexadecanoate
0 double bonds

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2
Q

Linoleate

A

Omega 6 Essential fatty acid
Cis, Cis, ∆9, ∆12-Octadecadienoate
2 Double bonds

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3
Q

Linolenate

A

Omega 3 Essential fatty acid
All-cis ∆9, ∆12, ∆15-Octadecatrienoate
3 double bonds

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4
Q

Arachidonate

A

Omega 6 Essential fatty acid
All-cis ∆5, ∆8, ∆11, ∆14-Eicosatetraenoate
4 double bonds

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5
Q

What does an ether linkage do to an archaeon?

A

It makes it more resistant to hydrolysis

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6
Q

T/F: Branched and saturated hydrocarbons are more resistant to oxidation

A

True

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7
Q

Phosphatidylserine

A

Important for memory and cognition

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8
Q

Phosphatidylcholine

A

Major constituent of cell membrane and pulmonary surfactant

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9
Q

Phosphotidylethanolamine

A

25% of all phospholipids

Found particularly in nervous tissue such as white matter of brain

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10
Q

Phosphatidylinositol

A

Important signaling and functional activities in eukaryotic cells

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11
Q

Diphosphatidylglycerol

A

Cardiolipin
Important component of inner mitochondrial membrane
Only one in the mitochondrial membrane

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12
Q

What does amphipathic mean?

A

Has hydrophobic and hydrophilic end

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13
Q

What is sphingolipid?

A

An amino alcohol that contains a long, unsaturated hydrocarbon chain

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14
Q

Sphingomyelin

A

Phospholipid with a sphingosine backbone
Amino group linked to fatty acid by amide bond
Found in myelin sheath a lot

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15
Q

What are glycolipids derived from?

A

Sphingosine…sugars are always on extracellular side of glycolipid

16
Q

Cerebrosides

A

Simplest glycolipid, contains a single sugar residue with glucose or galactose
Common name for a group of glycosphingoipids

17
Q

What is cholesterol

A

Most abundant steroid in animals with 4 fused saturated hydrocarbon rings
Absent from most intracellular membranes and prokaryotes