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BCEM393 > Lipids Review > Flashcards

Lipids Review Flashcards

1
Q

Lipids Defn

A

Water-insoluble molecules that are soluble in organic solvents

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2
Q

What are the 4 roles of lipids

A

Membranes
Energy Storage
Signaling
Fat-soluble vitamins

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3
Q

What are the key roles of fatty acids?

A

Fule

Building blocks for membrane lipids

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4
Q

Saturated fatty acids

A

only single bonds

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5
Q

Unsaturated

A

with double bonds cis or trans

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6
Q

Are double bonds typically cis or trans for fatty acids?

A

cis

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7
Q

What are the properties of fatty acids and lipids derived from

A

chain length and degree of saturation

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8
Q

What does chain length impact?

A

melting point

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9
Q

same saturation and longer chain means

A

higher melting point

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10
Q

does a saturated or unsaturated have a lower melting point? why

A

Unsaturated has a lower melting point
van der waals interactions
kinks disrupt packing

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11
Q

How can we enhance fluidity of fatty acids?

A

short chian

cis-unsaturation

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12
Q

what are the 3 membrane lipids

A

Glycerolipids
Sphingolipids
Sterols

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13
Q

What are the 4 components of glycerolipids?

A

Fatty acids
Platform (glycerol)
Phosphate
Alcohol

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14
Q

What are the 4 components of sphingolipids?

A

Fatty acids
Sphinogsine
Phosphate
Alcohol

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15
Q

GLycolipids

A

lipids that contain sugar

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16
Q

3 roles of steroids

A

hormones
help in digestion of lipids
component of membrane

17
Q

Steroids have a — structure

A

cyclic

BCEM393 (15 decks)

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