Answer;
Cell
Explanation;
-The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
-Cell is the basic unit and building block of life. It is bound by a cell membrane, and possesses a nucleus which acts as its brain. Arachnoidiscus ehrenbergi is an example of diatoms which are unicellular, therefore it is a cell.
Protons electrons and newtrons
<span>The protons and neutrons are located in the nucleus of the atom</span>
https://quizlet.com/492462564/chapter-14-human-genetics-karyotype-activity-flash-cards/
