One Substance Has No Membrane Transporters to Move It but Can

question 53

Multiple Choice

One substance has no membrane transporters to move it but can diffuse freely through open leak channels if there is a concentration gradient.Initially, this substance's concentrations in the filtrate and extracellular fluid are equal.Later, however, the active transport of Na⁺ and other solutes creates a gradient by removing water from the lumen of the tubule where it is located.What substance is this?

• A) glucose
• B) calcium
• C) urea
• D) glucose and calcium
• E) glucose, calcium, and urea

---

Definitions:

Labor-Management Relations

The dynamic relationship between employers and employees, including negotiations, conflict resolution, and cooperation.

Workplace Disputes

Conflicts that arise in the work environment related to job duties, employment terms, interpersonal relationships, or organizational policies.

TEAM Act

Legislation aimed at modifying labor law regulations to encourage cooperation and collective bargaining between employees and employers within a team-based work environment.

Labor-Management Committees

Groups formed by representatives of both labor and management to address and resolve workplace issues, improve labor relations, and enhance communication.