Structure of Plasma Membrane Flashcards
the plasma membrane is made up of 80% _______________?
phospholipids
how many layers make up the membrane?
2 bi layer
hydrophilic heads are ___________ on the ___________ and ___________ parts of the cell?
water loving, inside and outside
hydrophobic tails are made of ____________ therefore they are _______________ and are attracted to _____________?
fatty acids, water fearing, each other on the inside (middle part)
some carbohydrates attach to outer lipids of cell membrane and are called ___________ they are involved in?
gylcolipids, cell to cell recognition (uniform)
______________ are interspersed throughout the cell membrane?
proteins
functions of membrane proteins include?
receptors: hormones and neurotransmitters
enzymes: reactions in and out cell
transports: ions and molecules
what is the purpose of cholesterol in the body?
regulates fluidity of membrane. known as natures antifreeze? stops solid from being too solid or too liguidy
difference between integral and peripheal proteins?
integral are inserted into the bilayer (transmembrane)
peripheal on inner and outer surface
example of integral protein?
protein channel and carriers (takes ion in and out of cell)
example of peripheal proteins
anchors for cytoskeleton of membrane, and messaging enzyme: signal transduction
what are glycoproteins?
proteins modified with a carb, carbohydrates on outer surface of membrane
what is the outer carbohydrate coat? used for cell to cell recognition?
glycocalyx aka sugary coat
the plasma membrane is ___________ allowing to easily ___________ and _____________?
fluid, shift and flow.
do the philic and phobic tails bond strongly? how are they interacted?
they do not bond strongly, but interact hydrophobically.
