Cell Membrane Structure and Function

What term describes the cell membrane's ability to control what passes in and out?

• Impermeable

• Transparent

• Permeable

• Semi-permeable

What is the primary structure forming the cell membrane?

• Cholesterol

• Carbohydrates

• Phospholipid bilayer

• Proteins

Which part of the phospholipid is attracted to water?

• Fatty acid tails

• None

• Cholesterol

• Phosphate heads

What does 'hydrophobic' mean in the context of phospholipids?

• Water-loving

• Water-neutral

• Water-fearing

• Water-forming

What property allows the phospholipid bilayer to control what enters and leaves the cell?

• Its permeability

• Its double-layered structure

• Its color

• Its electrical charge

Which statement best describes the arrangement of phospholipids in the bilayer?

• Randomly arranged

• Tails face outward, heads face inward

• Heads face outward, tails face each other

• All heads face inward

What role does cholesterol play in the cell membrane?

• DNA protection

• Membrane stabilization

• Signal reception

• Energy storage

Which component of the cell membrane is crucial for transporting materials?

• Carbohydrates

• Cholesterol

• Proteins

• Water molecules

How do carbohydrates contribute to blood type identification?

• By acting as receptors

• By providing energy

• By attaching to proteins

• By repelling pathogens

Hydrophilic portion of cell membrane?

• A
• C
• D
• E