Describe the difference between integral and peripheralproteins in the plasma membrane

What is the primary characteristic of peripheral membrane proteins? A: They cannot be post-translationally modified. B: They span the entire lipid bilayer, sometimes multiple times. C: Detergents or nonpolar solvents are necessary to remove them from the lipid bilayer. D:Weak intermolecular forces keep them attached to the lipid membrane.

Describe the phospholipid structure and how its arrangement in the plasma membrane allows for the separation of internal and external environments as well as its selectively permeable nature.

When would a carrier protein be required in order to allow a solute to diffuse across a plasma membrane

In general, what is the relationship between membrane fluidity and membrane permeability?

List 2 functions of peripheral membrane proteins

List 2 functions of peripheral membrane protein

Identify how each of the following would pass through the plasma membrane: gases, large polar molecules, charged molecules (like ions), hydrophobic molecules, and small polar molecules. Be specific.

3)What is the second type of lipid that plays a major role in the plasma membrane? This lipid does not have polar and nonpolar regions (its not amphiphilic) but plays a critical role in membrane permeability. A)phospholipids b) steroid hormones c) Cholesterol 4)Which one of the following influences the rate at which diffusion can occur? Size of the concentration gradient Mass of the molecule Distance All of the above affect diffusion None of the above affect the diffusion rate

Explain how the chemical composition/structure of the plasma membrane allows for it to be selectively permeable. What does this information tell you about the chemical composition of an integral protein versus a peripheral protein? How do these differences allow for their different functions?