Question

1. which organelle is referred to as the control center of the cell?

a. mitochondria
b. nucleus
c. ribosomes
d. endoplasmic reticulum

Explanation:

The nucleus contains the cell's genetic material (DNA). It controls cellular activities like growth, metabolism, and reproduction. Mitochondria are the "powerhouses" (produce ATP). Ribosomes synthesize proteins. The endoplasmic reticulum is involved in protein and lipid synthesis. So the nucleus is the control center.

Answer:

B. Nucleus