# data[].attributes.headline
Provides a barrier, a way to protect the cell and allow certain molecules across

# data[].attributes.subject
Provides a barrier, a way to protect the cell and allow certain molecules across

# data[].attributes.headline
contain proteins that carry out specific functions

# data[].attributes.subject
contain proteins that carry out specific functions

# data[].attributes.headline
There are two types: phagocytosis and pinocytosis

# data[].attributes.subject
There are two types: phagocytosis and pinocytosis

# data[].attributes.headline
small and non polar molecules can pass through, but not polar molecules

# data[].attributes.subject
small and non polar molecules can pass through, but not polar molecules

# data[].attributes.headline
Pass through membrane down the concentration gradient

# data[].attributes.subject
Pass through membrane down the concentration gradient

# data[].attributes.body
By simple diffusion

# data[].attributes.headline
It is called fluid, because the membrane is not rigid, and there are integral proteins embedded in it 

# data[].attributes.subject
It is called fluid, because the membrane is not rigid, and there are integral proteins embedded in it 

# data[].attributes.body
molecules cross plasma membrane via protein carriers or ion channels

# data[].attributes.body
Model of cellular structure and its organelles

# data[].attributes.headline
it's the Double layer of the plasma membrane. 

# data[].attributes.subject
it's the Double layer of the plasma membrane. 

# data[].attributes.body
It has a phosphate head( polar)
hydrophobic tail