<prompt> Which of the follow ing occurs in mitochondria -GlycolysisHMP shuntTCA cycleGlycogenesis  <response>: Ans. is c i.e., TCA cycle SiteCycleReactionsCytosolQGlycolysis Q EMP Cycle Q, HMP shunt, fatty acid synthesisQ glycogenesis, glycogenolysis, Bile acidSalt synthesis, cholesterol synthesisMitochondria QKrebs cycle citric acid cycle Q. Electron transport chain ECT Q, Fatty acid oxidationQ, KetogenesisBoth cytosol and mitochondriaGluconeogenesisQ, Urea cycleQPeroxisomesOxidation of very long chain fatty acidsSmooth endoplasmic reticulumTriglyceride synthesisQ, Steroid synthesisQ, cholesterol synthesis, phospholipid synthesisRough endoplasmic reticulum ribosomesProtein synthesisNucleusDMA and RNA synthesiso They are called essential fatty acids because human beings require these fatty acids but cannot synthesize themQ,o Humans lack the enzymes to introduce double bonds at carbon atom beyond C9 in the fatty acid chain,o Hence, human cannot synthesize linolenic acid0and linolenic acid having double bonds beyond C9.o Arachidonic acid can be synthesized from linoleic acid.o Therefore, in deficiency of linoleic acid, arachidonic acid also becomes essential fatty acids,o Therefore linoleic acid is the most important essential fatty acid0 as it senes as a basis for the production of other EFA. 