Chapter 7, Problem 38A

Summary Introduction

To analyze:

Active transport an energy utilizing process.

Introduction:

In any living cell, to maintain the homeostasis different types of molecules continuously move in and out of the cell. The movement of molecules or transportation of molecules depends on several factors which are the concentration of the molecules, size of the particles, temperature, and pressure.

Explanation of Solution

When molecules move from their lower concentration to their higher concentration through the plasma membrane, they need carrier protein (pump) to do so. These pump or carrier proteins need the energy to transport molecules against the concentration gradient across the cell membrane.

Hence, active transport is an energy utilizing process.

Conclusion

The Sodium-potassium ATPase pump is the common example of an active transport pump which is present in the plasma membrane of the animal cell.