1.
What is the most abundant lipid in cellular membranes?
2.
What is a term for “water-loving”?
3.
What is a term for “water-hating”?
4.
How do phospholipids arrange in cell membranes?
5.
Mosaic What model describes the structure of the cell membrane?
6.
What factor can cause membranes to solidify or liquefy?
7.
Why is membrane composition important in different species?
8.
What is a major function of proteins that move substances across membranes?
9.
What do glycoproteins contain in addition to proteins?
10.
What type of molecules pass easily through the cell membrane?
11.
What type of molecules cannot pass easily through the cell membrane?
12.
In which direction do substances move during diffusion (in terms of concentration gradient)?
13.
Is diffusion a spontaneous or nonspontaneous process?
14.
What does passive transport not require?
15.
What happens when organisms with cell walls are exposed to hypotonic environments?
16.
What happens to organisms with cell walls in isotonic environments?
17.
What happens to organisms with cell walls in hypertonic environments?
18.
What process helps cells control water balance in different tonicity environments?
19.
What structure is involved in both exocytosis and endocytosis?
20.
Molecule that has both hydrophilic (water-attracting) and hydrophobic (water-repelling) regions.
21.
Membrane protein that spans across the lipid bilayer.
22.
Membrane protein that is attached to the surface of the lipid bilayer.
23.
Protein that facilitates the movement of molecules across a cell membrane.
24.
A type of transport protein that forms a pore to allow specific molecules to pass through the membrane.
25.
Channel proteins that allow water molecules to pass through the cell membrane.
26.
A type of transport protein that binds to a specific molecule and changes shape to transport it across the membrane.
27.
The movement of molecules from an area of higher concentration to an area of lower concentration.
28.
The diffusion of water across a selectively permeable membrane.
29.
The relative concentration of solutes in a solution compared to another solution.
30.
A solution with the same solute concentration as the cell’s interior, resulting in no net movement of water.
31.
A solution with a higher solute concentration than the cell’s interior, leading to water loss from the cell.
32.
A solution with a lower solute concentration than the cell’s interior, causing water to enter the cell.
33.
Channel proteins that allow ions to pass through the membrane.
34.
The type of transport of molecules across a membrane against their concentration gradient, requiring energy (usually ATP).
35.
The process by which a cell expels substances through vesicles that fuse with the plasma membrane.
36.
The process by which a cell takes in substances by engulfing them in a vesicle.
