West Virginia Barber Written Practice Exam 2026 - Free Barber Written Practice Questions and Study Guide

The correct answer is A. Cytoplasm. Cytoplasm is the dense active protoplasm found in the center of the cell. It is a jelly-like substance that fills the cell and is the site of many biochemical reactions necessary for the cell's survival.

Regarding the other options:

B. Nucleus is not the correct answer because the nucleus is usually located near the center of the cell but is not the dense active protoplasm itself.

C. Centrioles are organelles that play a role in cell division and are not the dense active protoplasm found in the center of the cell.

D. Histology is the study of the microscopic anatomy of cells and tissues, and it is not the dense active protoplasm found in the center of the cell.