Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
SBI4U Biological Macromolecules II- Lipids Main Function: Special Feature: Groupings: Types: 1. Triglycerides 2. Phospholipids 3. Steroids 1. Triglycerides Structure Triglycerides are composed of ___________________________________________ Formation and Breakdown Triglycerides are formed through a ____________________ reaction between __________ _________________________________ Triglycerides are broken down into ____________________________ through hydrolysis 2 Types of Fatty Acids 1. _________________________ 2. _________________________ Saturated Fatty Acids _____________________ at room temperature Contain only ______________ C-C bonds (resulting in __________________ chains) During digestion they are turned into “________________________” which can clog arteries Ex. Unsaturated Fatty Acids _______________ at room temperature Contain _________________ C-C bonds (resulting in __________________ chains) Unsaturated fats with more than one double bond are called ________________________ Ex. Trans Fats Unsaturated fat (contains _____________________) that has the properties of a saturated fat Often solid at room temperature Bad for you! Also causes an increase in “____________________” Configurations of the double bond results in straight chains 2. Phospholipids Structure: Fat derivatives in which one fatty acid has been replaced by a ___________________ and one of several nitrogen-containing molecules. an important part of the _________________________ (phospholipid bilayer) Composed of _________________________________________________________ Phosphate head is _________________ (“water-loving”) and fatty acid tails are ___________________ (“water-hating”) 3. Steroids Very ____________________ structure to other lipids Made of 4 __________________________________ Include hormones such as _______________________ Homework: 1. Fill out the chart below Saturated Unsaturated # of double bonds between Carbons Shape of Chains State at room temperature Which are better for you? Examples 2. Considering the structure of the chains explain why saturated fats are solid at room temperature while unsaturated fats are liquid. Use a diagram to illustrate your answer. 3. Amphiphillic means that a macromolecule has both hydrophobic and hydrophilic properties. Which type of lipid demonstrates this? Looking at it’s structure explain why it has both properties.