What does selectively permeable mean?
Nothing is allowed into the cell
The cell allows specific molecules in, but not others
Everything can enter, but it has to go in the right way
None of these
What makes proteins "integral"
It is attached only to the surface of the membrane
It is made of lipids that form the membrane barrier
It only functions in transporting water across the membrane.
They pass all the way through both sides of the lipid bilayer.
What is the difference between glycoproteins and glycolipids?
They both help in cell communication.
Glycolipids and glycoproteins both only function in moving substances across the membrane
Glycolipids mainly help with cell recognition and membrane stability, while glycoproteins are more directly involved in cell communication and signaling
Glycolipids transport molecules across the membrane, while glycoproteins produce energy for the cell
Which molecule maintains the membrane's structure and fluidity?
Cholesterol
Glycolipids
Phospholipids
Integral proteins
What does "fluid mosaic model" mean?
The cell membrane is flexible and made of many different parts that move around
The cell membrane is a solid, unmoving layer that keeps everything in place
The cell membrane is filled with water that flows freely through it
The cell membrane is made of rigid tiles that form a protective outer shell