Biologyhard · Past Paper
What is the function of 'Surfactant' in the alveoli?
AIncreasing surface tension
BReducing surface tension to prevent collapse
CFacilitating CO2 transport
DKilling bacteria
✓ Correct Answer: B — Reducing surface tension to prevent collapse
Pulmonary surfactant reduces the surface tension at the air-water interface in the alveoli, preventing them from collapsing.
Share this question
More from Biology
- What is the role of the hormone Gastrin?
- The Endosymbiotic Theory suggests that mitochondria and chloroplasts originated from:
- If a child has blood group AB and the mother has blood group A, what can NOT be the blood group of the father?
- Which proteins are involved in the movement of chromosomes during anaphase?
- In a cross between Tt and tt, what is the expected ratio of phenotypes?