Phospholipid

What characteristic of lipid molecules causes them to repel water?

• Hydrophobic nature

• Hydrophilic nature

• Polar nature

• Amphipathic nature

What component of phospholipids makes one end of the molecule hydrophilic?

• Fatty acid chains

• Cholesterol

• Glycerol backbone

• Phosphate group

Why do phospholipids have mixed properties?

• They are non-polar

• They are entirely hydrophilic

• They are entirely hydrophobic

• They contain both hydrophobic and hydrophilic regions

What is one of the key roles of phospholipids in biological systems?

• Forming cell membranes

• Hormone production

• DNA replication

• Energy storage

Which of the following structures is primarily composed of phospholipids?

• Nucleus

• Cell membrane

• Cell wall

• Mitochondria