Biology

It includes topics like the cell (the basic unit of life), tissues, diversity of living organisms, health and diseases, and the structure and function of plants and animals.`

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.`

The basic structural and functional units of living organisms. Cells are the building blocks of life, and they can be prokaryotic (e.g., bacteria) or eukaryotic (e.g., animal and plant cells).`