Which substance greatly reduces the attractive forces among the water molecules lining the alveoli?
A)Lysozyme
B)Converting enzyme
C)Mucus
D)Surfactant

Question

Quizplus · Accepted Answer

Surfactant is a substance that reduces the surface tension of a liquid, in this case, the water molecules lining the alveoli. This makes it easier for the alveoli to remain open during exhalation and prevents collapse, allowing efficient gas exchange to occur. Lysozyme is an enzyme that breaks down bacterial cell walls and is found in tears, saliva, and other body fluids. Converting enzyme is an enzyme involved in the renin-angiotensin-aldosterone system that regulates blood pressure and fluid balance. Mucus is a sticky, viscous substance that lines the respiratory tract and helps trap inhaled particles and microorganisms. None of these substances directly affect the attractive forces among the water molecules in the alveoli.

Which Substance Greatly Reduces the Attractive Forces Among the Water