Exploring the Plasma Membrane and Fluid Mosaic Model

What is the primary function of the plasma membrane?

• To produce energy for the cell

• To act as a boundary between the inside and outside of a cell

• To synthesize proteins

• To store genetic information

What are cell membranes primarily made of?

• Nucleic acids

• Proteins

• Carbohydrates

• Phospholipids

Which part of the phospholipid molecule is hydrophilic?

• Triglyceride

• Fatty acid tails

• Glycerol backbone

• Phosphate head

How do phospholipids arrange themselves in a liquid environment?

• In a random pattern

• With hydrophobic tails facing outward

• In a bilayer with hydrophilic heads facing outward

• With hydrophilic heads facing inward

What is one function of proteins embedded in the cell membrane?

• To store energy

• To produce lipids

• To replicate DNA

• To transport substances across the membrane

What is the role of glycoproteins in the cell membrane?

• To transport water

• To provide structural support

• To act as recognition signals to other cells

• To produce energy

What is the function of cholesterol in the cell membrane?

• To store genetic information

• To regulate fluidity and provide support

• To synthesize proteins

• To transport substances

What model describes the structure of the cell membrane?

• Lock and key model

• Fluid mosaic model

• Double helix model

• Central dogma model