Lipid Movement
This type of movement of membrane lipids rarely happens
Flip-flop
The two major categories of membrane proteins based on their association with the bilayer
Peripheral and integral
This feature of the hydrocarbon tails in the bilayer make the membrane more fluid (hint: not length)
Unsaturated bonds
Two important macromolecular groups that make up the bilayer
Lipids and proteins
True or false: when a phospholipid is synthesized on one leaflet, it will always stay on that side of the leaflet
False
This movement is when phospholipids move around side-to-side within their monolayer
Lateral diffusion
This type of compound is necessary for removing and studying integral proteins
Detergents
This word describes a membrane with mostly-fully saturated bonds
Viscous
The structure of the membrane (hint: think hydrophobic effect)
Bilayer
Site of membrane synthesis
This movement of the lipids within the bilayer refers to spinning
Rotation
Lectin interacts with this structure of the plasma membrane by recognition of a specific oligosaccharide for recruitment of white blood cells to sites of infection
Carbohydrate layer
Increasing _______ of the hydrocarbon tails leads to a decrease in fluidity (hint: not referring bonds)
Length
Symmetry of the membrane (for animal cells/no cell wall)
Asymmetrical
When synthesizing newly made phospholipids, they are synthesized facing EXCLUSIVELY this side of the monolayer
Cytosolic
This movement of lipids in the monolayer refers to bending and flexing of the hydrocarbon tails
Flexion
The four functions of membrane proteins
Transporters, Anchors, Receptors, and Enzymes
The type of bonds between the fatty acid tails of butter
Saturated bonds
Most lipids in the bilayer have 2 hydrocarbon tails with this composition
1 saturated 1 unsaturated
This organelle utilizes a particular enzyme to establish asymmetry of phospholipids
Golgi apparatus
These enzymes 1. flip lipids at random across both bilayers and 2. flip specific lipid from one leaflet to the other respectively
Scramblase and flippase
The four ways plasma membrane proteins are restricted in movement
Tethered to the cell cortex, tethered to the extracellular matrix, cell-cell adhesion, and tight junctions
Cholesterol function
Decrease fluidity at normal temperature; increase fluidity in cooler temperature or presence of mainly saturated bonds
The three different kinds of lipids present in the membrane
Phospholipids, glycolipids, and sterols
As a vesicle fuses with the membrane to deliver more lipids, the ones on the inner-leaflet and outer-leaflet will show up on these sides of the cell membrane respectively
Cytosolic face and extracellular face