Known as the cell’s “command center,” the nucleus is a large organelle that stores the cell’s DNA (deoxyribonucleic acid). The nucleus controls all of the cell’s activities, such as growth and metabolism, using the DNA’s genetic information. Within the nucleus is a smaller structure called the nucleolus, which houses the RNA (ribonucleic acid). RNA helps convey the DNA’s orders to the rest of the cell and serves as a template for protein synthesis.
A pillbug belings to Kingdom Animalia, Phylum Arthropdoa, and Class Crustacea.
<span>1. temperature
2.water purification
3. succession
4. alien species
5. conduct a survey of a species population in an ecosystem
6. adopt ecological conservation practices</span>
