Karten 17 Karten
Lernende 1 Lernende
Sprache English
Stufe Universität
Erstellt / Aktualisiert 08.01.2020 / 13.01.2020
Lizenzierung Keine Angabe
0 Exakte Antworten 17 Text Antworten 0 Multiple Choice Antworten


Fenster schliessen

Saturated fats definition (4)

Are not kinked within the structure (no C=C in carbon chain) and are saturated with many hydrogen atoms 

Solid at lower temperatures

Provide rigidity and less fluidity


Fenster schliessen

Unsaturated fats definition (3)

Less saturated, meaning they have less hydrogen atoms because attached, because C=C in chain takes away bonding possibilities

Provide more fluidity to plasma membrane 

Fenster schliessen

Trans definition

Straight saturated hydrocarbon chain

Trans = inflexible and straight

Heated cis becomes trans 

Fenster schliessen

Cis definiton

Bent saturated hydrocarbon chain 

Has a double bond C=C 

Heated cis becomes trans 

Fenster schliessen

Difference between monounsaturated and polyunsaturated fat 

mono = one C=C

poly = two or more C=C

Fenster schliessen

Common features of lipids (3)


soluble in ethyl ether & chloroform -> non-polar solvents

Contains many hydrocarbons (chain or ring structure)

Fenster schliessen

Composition of fatty acid (3)

Carboxylic acid group on one end (COOH, makes it fatty acid), hydrocarbon chain, methyl group on other end (CH3)

Fenster schliessen

What are implications (effects) on having glyceride rich diet?

Obesity & Atherosclerosis (hardening of arteries)

Fenster schliessen

Functions of trilgycerides (5)

Blubber for bouyancy (fat weighs les than muscle)


Protector of organs & shock absorber

Energy source

Water source 


Fenster schliessen

Why does body store triglycerides rather than carbohydrates (glucose)? (2 reasons)

Triglyceride metabolism yields (wins) more ATP than glucose

Adipose tissue (lipid sotrage) can expand exponentially whereas carbohydrate storage (liver) has finite size

Fenster schliessen

Differences and similarities of diglycerides and phospolipids (number of fatty acid chains, hydrophilic region, hydrophobic region)

Diglycerides: two fatty acid chains, no hydrophilic region, hydrophilic region

Phospholipids: two fatty acid chains, hydrophilic and hydrophobic regions

Fenster schliessen

Phospholipids (twi things that make them useful)

Unsaturated fatty acid chain (kink) makes hydrophobic region flexible

Hydrophilic head keeps the membrane together and protects them from bigger and hydrophobic molecules

Fenster schliessen

Sterols (structure 1, properties 3)

Tetra-ring structure 

Grouped in lipids (same properties)

Non soluble in polar solvents (water)

Soluble in non polar (organic) solvents (ether)

Fenster schliessen

Cholesterol (function (3), properties (2) -> (1))

Hormone synthesis, vitamin d synthesis, structural support in membranes

Extremely hydrophobic and insoluble in polar solvents 

Packed into apolipoprotein (lipid,cholesterol,protein bundle)


Fenster schliessen

What happens if you have too much cholesterol? (3)

Heart disease


Inflexible membranes 

Fenster schliessen

HDL (definition, function (2), how much cholesterol do they contain?)

Apolipoprotein (lipids,cholesterol,protein) -> High density of cholesterol

Transportation of fat (cholesterol, phospholipids, triglycerides) & cholesterol from cells to liver for excretion or reuse

Fenster schliessen

LDL (definition, function, how much cholesterol do they contain?)

Apoliopprotein -> Low density of cholesterol

Deliver cholesterol to cells (used witihn membrane and synthesis of steroid hormones)