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Lecture 3

BIO152H5 Lecture 3: BIO152 - Lecture 3 - Lipids and Cell Membranes
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Department
Biology
Course
BIO152H5
Professor
Maria Arts
Semester
Summer

Description
BIO152 Hadia Saeed May 16, 2017 Lecture 3 Lipids and Cell Membranes Overview: Lipids Saturated versus unsaturated fat Hydrogenation process trans fats Essential fatty acids Steroids Phospholipids Cell membranes Fluid mosaic model Evolutionary Connection Macromolecules Form = function o Saturated= straight o Unsaturated = visually has a kink and therefore is liquid Lipids Carbon containing compounds thatre largely Fats Function insulation o Important source of nutrients o Longterm energy storage Saturated Fats Maximum number of hydrogen atoms C C bond Linear shape of fatty acids allows them to stack easily Solid at room temperature Unsaturated Fat Less than the maximum number of hydrogen atoms C = C Bent shape Liquid at room temperature Hydrogenated Fats Hydrogenation Converts unsaturated C=C double bonds into CC single bonds
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