Term
| What type of glycerol is a glycerophospholipid? where is its group attached |
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Definition
1,2 diacylglycerol
Phosphate is attached at the c3 of glycerol |
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Term
| Why is Glycerol prochiral? |
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Definition
| attachment of phosphate turns achiral glycerol into chiral molecule |
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Term
| What is the structure of Phosphatidic acid ? why is it important |
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Definition
1,2 diacy 3 phosphate
its an important intermediate in biosynthesis of the more common glycerophospholipids |
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Term
| Ether Glycerophospholipid ? |
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Definition
| ether linkage instead of ester at c1 |
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Term
| Platlet activating factor? Important in what |
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Definition
| is an ether glycerophospholipid and due to its c2 acetate group is more water soluble than counterparts. Plays a role in signal transduction |
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Term
What is a Sphingolipid?
Diffences between glycerol |
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Definition
18 carbon amino hydroxyl backbone.
Difference between glycero is the amide linkage of fatty acid at c2. |
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Term
| Sphingolipids can only have? |
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Definition
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Term
| What are Sphingomyelins and what are they important in |
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Definition
They are sphingolipids with either phosphorylcholine or phosphorylethanolamine substituent at c1 hydroxyl of ceramide.
They important in nervous tissue |
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Term
| What are glycosphingolipids and what and where is there linkage at? |
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Definition
| sphingolipids with one or more sugars in a beta linkage at c1 of glycerol |
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Term
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Definition
| a glycosphingolipid with one sugar |
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Term
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Definition
| Sphingolipid with 3 or more sugars |
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Term
how are waxes made ?
what is there general formula |
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Definition
an LONG CHAIN alchohols and LONG CHAIN carboxyl esterfied together
R-O-cO-R |
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Term
| What is a terpene? what is the name of its subunit? systemtic? how many carbons does it have? |
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Definition
| combination of isoprene units ( either head totail or tail to tail) 2-methyl-1,3-butadiene 5 carbons |
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Term
| What is a Monoterpene? how many carbons |
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Definition
| two isoprene units , 10 carbons |
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Term
| What are Sesquiterpenes ? how many carbons |
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Definition
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Term
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Definition
| 4 isprene units, 20 carbons |
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Term
| what is a Gonane? why is it important |
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Definition
| A Gonane is 3 sixmembered rings and 1 five membered ring. It is the Strucurual motif common in ALLL STERIODS !!! |
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Term
| What is the most common steriod in animals? Why is it important ? |
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Definition
| Cholestrol, important because it is a precursor for all other molecules |
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Term
| draw out the structure of cholestrol |
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Definition
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Term
| What are common characteristics of steriod structure |
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Definition
methyl at 10, 13
8-12 carbon alkyl group at 17 |
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Term
| cholestrol in Plasma membranes vs intracellular membranes |
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Definition
| More in Plasma membrane than in intracellular membrane |
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Term
| What effect does the c3 hydroxyl of cholestrol have on it? |
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Definition
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Term
| Amphipathic polar nature of cholestrol allowsw it to? |
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Definition
| enter and disrupt mebbranes and their packing |
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Term
| Steriod carrier protein carriers affinity? so what? |
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Definition
| they have a high affinity for their steriods which means only small concentration of steriod needed to form response |
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Term
| What are the five classes of hormones (and there functions) synthesized from cholestrol |
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Definition
| Androgens (sexual characteristics and sexual function) ,estrogens(dido) , progestens(regulate menstruation) , corticosteriods( control metabolism) , mineralocorticoids( control ion balances) |
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Term
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Definition
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Term
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Definition
| detergent molecules secreted by the gull bladder to aid in the absorption of dietary lipeds |
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Term
| Characteristics of Lipid signals |
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Definition
Act Locally
Very short lifetime |
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Term
| What enzymes produce signal products?What are the different types of them and what do each one of them do. |
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Definition
Phospholipases.
A1-cleave (hydrolyze) c1 fatty acid
A2- cleave c2 fatty acid
C-hydrolyze phosphate on glycerol side
D-hydrolzye phosphate on polar head group side |
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