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.

Multicellular organisms thus have the competitive advantages of an increase in size without its limitations. They can have longer lifespans as they can continue living when individual cells die. Multicellularity also permits increasing complexity by allowing differentiation of cell types within one organism.

The advantage of multicellularity, when compared to unicellularity is that the life span of organisms is higher in the case of multicellular organisms since they have a large number of cells to maintain various functions than the unicellular organism.

Unicellular organisms don’t live as long and multicellular organisms. Unicellular organisms are smaller and they are faster at reproduction. Disadvantages- Unicellular organisms only have one cell that is used to function their entire being. Short life span, can’t grow lager then multicellular organisms.

The advantage of a multicellular organism over a unicellular organism is that multicellular organisms can grow to virtually any size because the cells integrate their activities and are permanently associated with one another.

There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue. Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues). Epithelial tissue provides a covering (skin, the linings of the various passages inside the body).

The correct order of the cell cycle is G1, S, G2, M and possible exit into G0. During gap 1, or G1, the cell is growing and does its job in the body….

Explanation: There are six different levels of organization important to the study of ecology – they are: species, population, community, ecosystem, biome and biosphere. By understanding these relationships we can make informed decisions about policy regarding how to manage our wildlife resources.

Cell → Tissue→Organ→Organ system→Organism.

The six levels of structural organization are: chemical, cellular, tissue, organ, system and organism.