Class notes
Class notes 4BBY1013 (Biochemistry)
- Course
- Institution
complete class notes for lecture: Lipids and membranes taken in academic year 2022/2023
[Show more]
Seller
Follow
rohmashahab14
Content preview
Lecture 04 – Lipids and moleculesLearning outcomes
describe the major lipid components of cell membranes, (glycerophospholipids, sphingolipids and cholesterol) and be able
to explain features of these molecules that confer hydrophobic and hydrophilic qualities.
recognize and correctly name examples of the above classes of lipids and examples of fatty acids commonly found in
biological molecules.
understand the effects that unsaturation of the fatty acid components of glycerophospholipids confer on the physical
properties of these molecules.
describe membrane fluidity in molecular terms and identify characteristics of the components of membranes that influence
this factor.
Give a brief account of the permeability characteristics of the lipid bilayer to different classes of molecule.
Lipids and fats
Lipids: molecules in cells that are water-insoluble (hydrophobic) but soluble in organic solvents e.g.
Triacylglycerols (fats and oils)
Glycerophospholipids and other membrane lipids
Steroids and cholesterol
Dietary and storage lipids are triacylglycerols (neutral fats).
Hydrophobic molecules
Form droplets in water or aqueous environment.
Important energy storage molecules
Membrane lipids
, Polar amphipathic molecules.
The most common class of polar membrane lipid are phospholipids, mostly based on glycerol –
glycerophospholipids
Basic structure of glycerophospholipids compared to triacylglycerols
Instead of a third fatty acid we have a phosphate attached to a polar head group (labelled ‘amino alcohol’
here)
Polar head groups found in phospholipids
Amino alcohols
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller rohmashahab14. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.73. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67474 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now