Cell Membranes Flashcards
What is the function of membranes within a cell
What is an ampipathic lipid
What does lipid structure determine
What are Cell Membranes made up of
Lipids + proteins
Draw the structure of a phospholipid
What happens of the tail of a phospholipid has unsaturated lipids
What is the main type of phospholipid in most animal cell membranes
Phosphoglycerides
How do ampipathic lipids drive bilayer membrane formation
what types of membrane lipids are there
What ways can membrane lipids move
What are lipid raft domains
Why is the asymmetry of membrane lipids important for a cell
Who is a smelly baby
Joey kar kit pang
What is the role of proteins in the membrane
What are transmembrane proteins
How can mapping the hydrophobic parts of transmembrane protein predict its arrangement across membranes
What does glycosylated mean
The attachment of carbohydrates to the backbone of a protein through an enzymatic reaction
It’s a type of post translation modification
Plays a crucial role in determining protein structure and stability
What are lipid raft domains made up of
Sphingolipids
Cholesterol
Glycosphingolipids
Integral membrane proteins
Peripheral Membrane Proteins
What are the characteristics of lipid raft domains
Lipid rafts are more ordered and tightly packed than the surrounding membrane regions due to the presence of saturated lipids and cholesterol.
lipid rafts are dynamic and can form, disassemble, and reorganize rapidly in response to cellular signals and changes in the environment
Small Size
What are the functions of lipid raft domains
Lipid rafts serve as platforms for the clustering of signaling molecules, facilitating efficient signal transduction
They are involved in the sorting and trafficking of proteins and lipids within the cell. This includes roles in endocytosis, exocytosis, and intracellular transport.
Lipid rafts help in the segregation and organization of proteins within the membrane, ensuring that specific proteins are localized to functional regions of the cell surface.
Certain viruses exploit lipid rafts for entry into host cells
