[2] Class 1-Lipids-Agbas Flashcards Preview

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Flashcards in [2] Class 1-Lipids-Agbas Deck (55)
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31

Phosphoglyceride important for memory and cognition

Phosphatidylserine

32

Phosphoglyceride that it's major constituent of cell membrane and pulmonary surfactant

Phosphatidylcholine

33

Phosphoglyceride composing 25% of all phospholipids and are found, particularly in humans, in nervous tissue such as the white matter of the brain

Phosphatidylethanolamine

34

Phosphoglyceride important for signaling and other functional activities in eukaryotic cell

Phosphatidylinositol

35

Phosphoglyceride that is important component of inner mitochondrial membrane

Diphosphatidylglycerol

36

Amino group replaces a fatty acid component of phosphoglyceride...other fatty acid is unsaturated c-18

Amino Alcohol

Sphingosine

37

Sphingosine + FA

Ceramide

38

Ceramide + phosphorylcholine

Sphingomyelin

39

Ceramide + monosaccharides

Cerebrosides

40

Ceramide + oligosaccharides

Globoosides

41

Ceramide oligosaccharides + NANA

Gangliosides

42

Phospholipid w/ sphingosine as backbone w/ amide bonded FA and phosphorylcholine group

Sphingomyelin

43

Where is sphingomyelin found? And what purpose does it serve?

Animal cell membranes in myelin sheath that surrounds some nerve cell axons

It provides electrical insulation for nerve transmission

44

-Sugar-containing lipids
-Derived from sphingosine
-Differ from sphingosine d/t unit linked to OH- grp of backbone

Glycolipids

45

Glycolipids sugar moiety face intra/extracellular?

Extracellular. It is involved in cell to cell interactions

46

-The simplest glycolipid
-Contains single sugar residue
-Also called monoglycosylceramides

Cerebrosides

47

Function of Cerebrosides:

Important components in animal muscle and nerve cell membranes

48

A steroid, present in eukaryotes [not most porkaryotes]
Built from 4 fused saturated hydrocarbon rings
Classified as sterol b/c of OH- grp. And branched aliphatic side chain o 8-10 C atoms at C-17.

Cholesterol

49

Which Carbon has the OH-grp in cholesterol?

Carbon 3

50

Scientific name of cholesterol

Cyclopentanoperhydrophenanthrene ring system

51

Most abundant steroid in animals

Major component of eukaryotic plasma membrane

Cholesterol

52

Cholesterol orientation in membrane?

Parallel to FA chains of the phospholipids, and the hydroxyl group interacts w/ the nearby phospholipid head group.

53

Cholesterol is absent in:

Some Intracellular membranes
And
Prokaryotes

54

Metabolic precursor of steroid hormones:

Cholesterol

55

Key components of lipids:

FA's