What is the term for the process by which cells regulate the concentration of ions and molecules within their boundaries?

A Osmosis
B Diffusion
C Active transport ✓
D Homeostasis

Explanation

Active transport is the process by which cells regulate the concentration of ions and molecules within their boundaries, often against their concentration gradient, using energy from ATP.

Source

Campbell Biology
Fundamentals of Biochemistry Cell Biology Cell Transport Medium MEDICAL Confidence: high