Question

A. Draw a triacylglycerol (TAG) you would find in a Brazil nut (a tropical tree). Name it systematically. 15 pts B. Explain its structure/function relationships, independent of fluidity. 8 pts. C. Draw a phospholipid you would find in an Alaskan halibut (an artic fish) Name it systematically. 15 pts Explain and discuss the common structure/function relationships of phospholipids. Two separate drawing are required for significant credit. 12 pts

Answer 1

A) TAG present in Brazil Nut

CH2OC(CH(CH2)7CH3 CHOC(CH2HCH(CH2)7CH3 CH2OC(CH2)7CH=-CH(CH2)7CH3

where for example the fatty acid group combination cou stearic R' oleic linoleic

B) The Brazil nut( Bertholletia excelsa) is a south American tree in the family Lecythidanceae, and also the name of the tree's commonly harvested edible seeds. The Brazil nut is a large tree, reaching 50 m tall and with a trunk 1-2 m in diameter. Brazil nuts are 14% protein, 12% carbohydrate and 66% fat by weight, 85% of their calriescime frm fat, and 100 gram amount provides 656 total calories. The fat components are 23% saturated , 38% monounsaturated   and 32% polyunsaturated. Due to their high polyunsaturated fat content, primarily omega-6-fatty acid shelled. Brazil oil nut contains 75% unsaturated fatty acid.

C) Phospholipds present in Artic fish

CH N(CH),-choline CH hydrophilic head (phosphate) phosphate hydrophobic tails (hydrocarbon chains) CH CHCHglycerol phospholipid symbol с о с о 2 fatty acids

Ubiquitous to all tissues, phospholipds are essential components of cell membranes consisting of a hydrophilic head group and a hydrophobic tail giving phospholipds their amphiphilic prperties. These phospholipd-based bilayer that allows for the assembly of cell and organelle membrane. It has selective permiable barriers which are essential for effective separation of a cellular constituents such as nutrients and ions. No mammalian membrane or cells are formed without phospholipids.