What Is the Expected Change in Lung Mechanics After the Administration

question 8

Multiple Choice

What is the expected change in lung mechanics after the administration of surfactant?

• A) Increased pressure
• B) Increased flow rate
• C) Increased compliance
• D) Increased respiratory rate

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Definitions:

Positive Selection

The evolutionary process by which alleles that confer a fitness advantage increase in frequency within a population, leading to adaptation.

Purifying Selection

A type of natural selection that removes deleterious alleles from a population, leading to a decrease in genetic variation for the traits affected.

Neutral Theory

A theory in molecular evolution that proposes most genetic variations are the result of genetic drift and not selective forces, and that at the molecular level, the majority of mutations are neutral.

Molecular Evolution

The process of evolution at the scale of DNA, RNA, and proteins, encompassing changes in molecular structure and sequence over time.