Cell Membrane Quiz

What is the primary structure of the cell membrane described as?

• Solid layer of proteins

• Fluid mosaic of lipids and proteins

• Rigid wall of carbohydrates

• Single layer of nucleic acids

What type of permeability does the cell membrane exhibit?

• Complete permeability

• No permeability

• Selective permeability

• Universal permeability

Which of the following is NOT a function of the cell membrane?

• Passive and active transport of small molecular components

• Bulk transport of large or many molecular components

• Production of energy

• Selective permeability

What is the role of phospholipids in the animal cell plasma membrane?

• They provide structural support to the cell.

• They act as enzymes for cellular reactions.

• They form the basic structure of the membrane.

• They transport oxygen across the membrane.

Which component of the animal cell plasma membrane is involved in cell recognition?

• Cholesterol

• Glycoprotein

• Phospholipids

• Microfilaments

What is the function of cholesterol in the plasma membrane?

• It provides energy for the cell.

• It stabilizes the membrane structure.

• It acts as a receptor for hormones.

• It facilitates the transport of proteins.

Which type of protein is embedded within the lipid bilayer of the plasma membrane?

• Peripheral proteins

• Integral proteins

• Glycoproteins

• Microfilaments

What is the main structural component of the cell membrane according to the Fluid Mosaic Model?

• Phospholipid bilayer

• Carbohydrate chains

• Nucleic acids

• Glycoproteins

What are the two regions of a phospholipid molecule?

• Hydrophilic head and hydrophobic tails

• Hydrophobic head and hydrophilic tails

• Polar head and nonpolar tails

• Nonpolar head and polar tails

What is the nature of the movement of membrane proteins in the Fluid Mosaic Model?

• They are fixed in place

• They float freely or are anchored by the cytoskeleton

• They move only vertically

• They are rigid and immobile