Which statement must be mentioned in explaining why amphipathic molecules line up at a water surface?

Which statement must be mentioned in explaining why amphipathic molecules line up at a water surface?

The following statement must be mentioned in explaining why amphipathic molecules line up at a water surface:

Amphipathic molecules line up at a water surface because of their dual nature: they have both hydrophilic (water-loving) and hydrophobic (water-hating) regions.

When an amphipathic molecule is placed in water, its hydrophilic region is attracted to the water molecules, while its hydrophobic region is repelled by the water molecules. This causes the amphipathic molecule to orient itself so that its hydrophilic region is facing the water and its hydrophobic region is facing away from the water.

At the water surface, amphipathic molecules line up with their hydrophilic heads facing the water and their hydrophobic tails pointing away from the water. This creates a barrier that prevents water from evaporating too quickly and also prevents dust and other contaminants from entering the water.

Amphipathic molecules are also found in many biological systems, such as cell membranes and detergents. In cell membranes, amphipathic molecules form a bilayer structure, with their hydrophilic heads facing the water on both sides of the membrane and their hydrophobic tails facing each other in the middle. This bilayer structure protects the cell from its environment and allows it to regulate the passage of substances into and out of the cell.

In detergents, amphipathic molecules help to remove dirt and oil from surfaces. The hydrophilic heads of the detergent molecules are attracted to the water, while the hydrophobic tails are attracted to the dirt and oil. This causes the dirt and oil to be suspended in the water so that they can be washed away.

In conclusion, amphipathic molecules line up at a water surface because of their dual nature: they have both hydrophilic and hydrophobic regions. This allows them to form barriers that protect water from evaporating and contaminants from entering, and it also allows them to help remove dirt and oil from surfaces.