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Biochemistry LAB > LIPIDS > Flashcards

LIPIDS Flashcards

1
Q

LIPID PROFILE

A 
Total cholesterol 
TAGs Triaclyglycerol
LDL
HDL
VLDL
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2
Q

Lipids are?

A

Insoluble to water

Soluble in non polar compound

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3
Q

Building blocks of lipids

A

Fatty acids

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4
Q

What are the fat soluble vitamins?

A

Vitamin A, D, E, and K

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5
Q

Tail of fatty acids are?

A

Hydrophobic

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6
Q

Head of fatty acids are?

A

Hydrophilic

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7
Q

When fatty acid is attached to _____________ For fat, the whole molecule is?

A

Glycerol

Hydrophobic

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8
Q

Lipid structure

A

Simple
Complex
Derivatives

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9
Q

Simple lipids

A

Fats, waxes, oil, steroids

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10
Q

Esters of glycerol

A

Simple lipids

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11
Q

Complex lipids

A

Phospholipids, Shingolipids, and Glycolipids

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12
Q

Derivatives

A

Hormones and fat-soluble vitamins

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13
Q

Classes of lipids

A 
Fatty acid
Triaclyglycerols
Glycerophospholipids
Waxes
Sphingolipids
Steroids
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14
Q

Long chain of aliphatic carboxylic acid

A

Fatty acid

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15
Q

Esters of fatty acids with glycerol

A

Triaclyglycerols

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16
Q

Esters of glycerol w/ fatty acids and phosphate derivatives

A

Glycerophospholipids

17
Q

Esters of fatty acid with a long alcohol chain

A

Waxes

18
Q

Esters of fatty acid w/ sphingosine and amino alcohol

A

Shingolipids

19
Q

Polycyclic aliphatics

A

Steroids

20
Q

Physical properties that determine lipids

A

Length and degree of unsaturation of the hydrocarbon

21
Q

Solubility depends on?

A

Polarity

22
Q

Spot test is also known as?

A

“Grease spot test”

23
Q

When fat is in paper, it _________ light

A

Diffracts

24
Q

To test degree of lipid unsaturation

A

Iodine test

25
Q

The higher the __________ The greater the ________

A

^ Iodine value

^ carbon carbon double bonds

26
Q

Test for detection of glycerol and fat

A

Acrolein test

27
Q

Acrolein test odor

A

Pungent irritating odor

28
Q

Dehydrating agent in acrolein test

A

KHSO4 Potassium bisulfate

29
Q

Principle of saponification

A

Acid (oil) + base (lye) = salt (soap)

30
Q

Hydrolysis of an ester under basic conditions from an alcohol and salts of carboxylic acid

A

Saponification

31
Q

Positive result for saponification

A

Formation of bubbles

32
Q

Forming an emulsion

A

Emulsification

33
Q

In emulsification, it is the mixture of 2 substances that are normally __________

A

Immisicble

34
Q

Natural emulsifying agent

A

Lecithin

Biochemistry LAB (5 decks)

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