Cell Structure and Function

Which part of the phospholipid interacts with the aqueous environment?

• Hydrocarbon tail
• Nonpolar region
• Fatty acid chain
• Polar head

The model describing the structure of the plasma membrane is called:

• Sandwich model
• Unit membrane model
• Fluid mosaic model
• Static lattice model

Integral proteins are best described as:

• Loosely attached to the surface
• Always floating freely
• Partially or totally buried in the membrane
• Exclusively on the outer layer

Where are peripheral proteins located in the membrane?

• Embedded deeply
• Spanning the membrane
• On the surface
• Dissolved in cytoplasm

How are membrane proteins classified based on their ease of extraction?

• Primary and secondary
• Soluble and insoluble
• Globular and fibrous
• Integral and peripheral