Concept:Fats are hydrophobic and tend to clump together in the watery environment of the intestine, severely limiting the surface area available for water-soluble enzymes (lipases) to act upon.
Formula:N/A
Solution:- Bile salts (such as sodium glycocholate and taurocholate) are amphipathic molecules secreted by the liver.
- They act like biological detergents. Their hydrophobic ends bury into the fat droplets, while their hydrophilic ends face outward.
- This mechanical dispersion breaks large fat masses into microscopic droplets (micelles), a process known as emulsification.
Why other options are incorrect:Lipase is the enzyme that actually chemically digests the fat
after it is emulsified. Trypsin and Chymotrypsin are proteases that break down proteins, entirely unrelated to fat.
Quality & Fidelity Assurance:
Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.