What roles do membranes play in a cell? What are cell membranes composed of? What is a lipid? What are some examples of lipids? What does amphipathic mean? What are the structure properties of triacylglycerols and steroids? What are the structural properties of phospholipid and detergents? What arrangements do phospholipids, detergents, and a combination of phospholipids and detergents tend to take in solution? What type of movements phospholipids undergo in a membrane? What type of movements do they not do? What determines membrane fluidity? Where are membranes formed in the cell? How is membrane asymmetry created and maintained? What are flippases and scramblases? Where do they function? What is the spatial arrangement of a membrane during transport? What are the different classifications of membrane proteins and what secondary structures are commonly found in transmembrane proteins? What is the cell cortex? What are membrane domains? What are different ways of establishing them? What is FRAP? How does it work? What is the carbohydrate layer? What are its functions? What is a lectin? Solution What roles do membranes play in a cell? function of the cell membranes: selectively permeable to ions and organic molecules. regulates the exchange of substances (movement of substances in and out of cells) Communicate with other cells (embedded proteins act as receptors, and channels) protect the cell from its surroundings What are cell membranes composed of? cell membranes are composed double layer of phospholipids with embedded proteins What is a lipid? What are some examples of lipids? What does amphipathic mean? Lipids are a class of biomolecules which include fatty acids or their derivatives. Examples of lipids are : natural oils, waxes, and steroids. Lipids are amphipathic : amphipathic means having both hydrophilic and hydrophobic parts. For example: Fatty acid has a long hydrophobic hydrocarbon chain and hydrophilic carboxyl group..

1. What roles do membranes play in a cell?
What are cell membranes composed of?
What is a lipid? What are some examples of lipids? What does amphipathic mean?
What are the structure properties of triacylglycerols and steroids?
What are the structural properties of phospholipid and detergents? What arrangements do
phospholipids, detergents, and a combination of phospholipids and detergents tend to take in
solution?
What type of movements phospholipids undergo in a membrane? What type of movements do
they not do?
What determines membrane fluidity?
Where are membranes formed in the cell? How is membrane asymmetry created and
maintained? What are flippases and scramblases? Where do they function?
What is the spatial arrangement of a membrane during transport?
What are the different classifications of membrane proteins and what secondary structures are
commonly found in transmembrane proteins?
What is the cell cortex?
What are membrane domains? What are different ways of establishing them?
What is FRAP? How does it work?
What is the carbohydrate layer? What are its functions? What is a lectin?
Solution
What roles do membranes play in a cell?
function of the cell membranes:
selectively permeable to ions and organic molecules.
regulates the exchange of substances (movement of substances in and out of cells)
Communicate with other cells (embedded proteins act as receptors, and channels)
protect the cell from its surroundings
What are cell membranes composed of?
cell membranes are composed double layer of phospholipids with embedded proteins
What is a lipid? What are some examples of lipids? What does amphipathic mean?
Lipids are a class of biomolecules which include fatty acids or their derivatives.
Examples of lipids are : natural oils, waxes, and steroids.
Lipids are amphipathic : amphipathic means having both hydrophilic and hydrophobic parts.
For example: Fatty acid has a long hydrophobic hydrocarbon chain and hydrophilic carboxyl

2. group.