3.1.3 Lipids Flashcards
The 2 main groups of lipids that I need to know are… and…
Triglycerides
Phospholipids
The 2 main groups of lipids I need to know are triglycerides and…
Phospholipids
When drawing fatty acids, the letter ‘R’ represents….and is followed by COOH (carboxylic acid)
A long hydrocarbon chain
When drawing fatty acids, the letter ‘…’ represents a long hydrocarbon chain and is followed by COOH (carboxylic acid)
R
The role of triglycerides is…
Energy storage
True or false the ‘R’ group of a fatty acid (the long hydrocarbon chain) is always saturated
False, it can either be saturated or unsaturated
The…of a fatty acid can either be saturated or unsaturated
R-group
A condensation reaction between glycerol and a fatty acid forms a…bond
Ester
A…reaction between glycerol and a fatty acid forms an ester bond
Condensation
RCOOH represents….
A fatty acid
(Where R is the long hydrocarbon chain and COOH is the carboxylic acid)
RCOOH represents a fatty acid where R is the…and COOH is the…
Long hydrocarbon chain
Carboxylic acid
Triglycerides are formed by the condensation of on molecule of…and 3 molecules of…
Glycerol
Fatty acids
Triglycerides are formed by the condensation of one…of glycerol and 3…of fatty acid
Molecule(s)
Type of bond between fatty acid and glycerol
Ester
Saturated fatty acids vs unsaturated fatty acids
Saturated= no double carbon bond (form linear hydrocarbon chains)
Unsaturated= at least one double carbon bond (hydrocarbon chains can bend)
Which type of fatty acid out of saturated and unsaturated doesn’t contain any double carbon bonds
Saturated= no double carbon bonds
Which type of fatty acid out of saturated and unsaturated contains at least one double carbon bond
Unsaturated
Saturated fatty acids have no double carbon bonds so form hydrocarbon chains that are ….(what shape)
Linear
Unsaturated fatty acids have at least one double carbon bond so the hydrocarbon chains can…(think about the shape)
Bend
.. fatty acids form linear hydrocarbon chains but …..fatty acids form hydrocarbon chains that can bend
Saturated
Unsaturated
Triglycerides are…in water so are described as hydrophobic
Insoluble
Triglycerides are insoluble in water so are described as …
Hydrophobic
Triglycerides are insoluble in water so are described as …
Hydrophobic
The role of phospholipids is…
Structural role
In phospholipids, one of the fatty acids of a triglyceride is substituted by…
A phosphate containing group