INBDE (Integrated National Board Dental Examination) Practice Exam

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Ace your INBDE with our comprehensive practice exam. Featuring detailed explanations, interactive flashcards, and a wide array of multiple-choice questions designed to mirror the real test. Get ready to surpass your expectations!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the function of lactoferrin?

Inactivates enzymes
Activates enzymes
Inactivates iron
Absorbs iron

The correct answer is: Inactivates iron

Lactoferrin is a protein found in our body, mostly in body fluids such as milk, tears, and saliva. Its function is to bind and inactivate excess iron in our body, preventing it from causing harmful effects. This makes option A and B incorrect because lactoferrin does not play a role in enzyme activation, only inactivation. While it does bind and transport iron, it does not absorb it as stated in option D. Therefore, option C is the correct answer.