Phospholipids: types, structure and function

The video explores phospholipids, their structure, types, and crucial roles in cell membranes. Phospholipids have a hydrophilic head and hydrophobic tails, forming a lipid bilayer that provides selective permeability. They are essential for cell survival, growth, and various biological processes.

What is the main structural feature of phospholipids that makes them resemble tadpoles?

• A single hydrophilic tail

• A hydrophilic head and two hydrophobic tails

• Two hydrophilic heads and a hydrophobic tail

• A hydrophobic head and two hydrophilic tails

Which molecule serves as the backbone for glycero phospholipids?

• Sphingozine

• Choline

• Glycerol

• Ethanolamine

What is the primary role of phospholipids in cell membranes?

• To transport oxygen in the blood

• To act as a primary component of cell membranes

• To provide energy for cellular processes

• To store genetic information

What property of phospholipids allows them to form a bilayer in cell membranes?

• Their hydrophilic and hydrophobic properties

• Their ability to dissolve in water

• Their rigid structure

• Their high energy content

How do phospholipids contribute to selective permeability in cell membranes?

• By forming rigid barriers that block all substances

• By dissolving in the cell's cytoplasm

• By selecting specific substances to pass through the membrane

• By allowing only water to pass through