Answer:
The arrow is pointing to the "nucleus."
Explanation:
A cell is the <em>smallest unit in an organism.</em> It mainly functions to provide structure to the human body, thus it is call <u>"the building blocks of life."</u>
There are 6 organelles in a cell and these are: <em>Nucleus, Ribosomes, Endoplasmic Reticulum, Golgi Aparatus, Chloroplasts and Mitochondria. </em>
The arrow is pointing to the cell's nucleus in the image above. This is an organelle that is enclosed in a membrane. It is where you can find the <em>deoxyribonucleic acid or the DNA, </em>which is essential for <u>hereditary function.</u> It also coordinates activities in the cell, such as<u><em> metabolism, synthesis of proteins, cell division, etc. </em></u>
Remember, not all cells have nucleus. Only eukaryotic cells have a nucleus. This cells are considered as more advanced.