T1: Lipids Flashcards

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1
Q

types of lipids

A

triglycerides and phospholipids

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2
Q

structure of a triglyceride

A

3 fatty acids and 1 glycerol molecule

formed by condensation, 3 ester bonds per triglyceride

for one triglyceride to form 3 water molecules are released

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3
Q

triglyceride structure and function

A

long hydrocarbon tail of fatty acids SO they contain lots of energy

insoluble SO don’t affect the water potential of cells

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4
Q

how do triglycerides clump together?

A

fatty acid tails are hydrophobic so face inwards shielding themselves from water using the hydrophilic glycerol heads

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5
Q

structure of a phospholipid

A

2 fatty acids, 1 glycerol, 1 phosphate group

2 ester bonds, 1 phosphodiester bond

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6
Q

phospholipid structure and function

A

make up the bilayer of cell membranes

hydrophobic tails and hydrophilic heads SO form a bilayer with heads facing out towards water on both sides

centre of bilayer is hydrophobic SO contains water soluble substances well

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