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IB Bio: Lipids

function and structure

QuestionAnswer
Sterol functions (2) Physiology and hormone
Wax functions (3) water proofing, structure, and water retention
Triglyceride functions (3) Insulation, energy storage, and protection
Phospholipid function (1) cell membrane
physiology sterol
Insulation Triglyceride
Energy storage Triglyceride
Water Proofing wax
structure wax
water retention wax
cell membrane phospholipid
hormone sterol
COOH In fatty acid Hydroxyl group
CH3 in fatty chain Methyl group
saturated or unsaturated - have mostly single bonds between C atoms saturated
saturated or unsaturated - solid at room temp saturated
saturated or unsaturated - found from animal sources saturated
saturated or unsaturated - have one (mono) or more (poly) double bonds between C atoms unsaturated
saturated or unsaturated - are typically liquid at room temperature, because kinks in the tails prevent tight packing of the molecules together unsaturated
saturated or unsaturated - Are often (but not only) from plant sources unsaturated
Cis-unsaturated or Trans-unsaturated - naturally occurring cis-unsaturated
Cis-unsaturated or Trans-unsaturated - Hydrogen atoms are "on the same side” of the C=C bond cis-unsaturated
Cis-unsaturated or Trans-unsaturated - Causes a kink in the fatty acid chain cis-unsaturated
Cis-unsaturated or Trans-unsaturated - Are not found in nature and are the result of human food processing Trans-unsaturated
Cis-unsaturated or Trans-unsaturated - Hydrogen atoms are "on the opposite side" of the C=C bond Trans-unsaturated
Cis-unsaturated or Trans-unsaturated - Causes a straight(er) fatty acid chain Trans-unsaturated
Which lipids are highly saturated (little to no c=c) wax
Which lipids have a backbone of 4 carbon rings Steroids
How are different steroids made By attaching different function groups to rings
What are the 3 components of a phospholipid two fatty acids + glycerol + phosphate group (Glycerol and phosphate group go together)
amphipathic hydrophobic and hydrophilic
Are phospholipids amphipathic? Yes
What structure do phospholipids make in H20? what can this become? Create Michelle (bubble); can eventually form bilayer
How could phospholipids have been evolutionary? by forming bilayer which make cell membranes
Created by: suiter.mayhew
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