What Is an Organism?

An organism is any living entity. To better understand this, it may be helpful to learn what three domains (types) of organisms exist. The three domains of organisms are Bacteria, Archaea, and Eukarya. Bacteria Salmonella Photo credit: https://www.eehealth.org/blog/2018/07/salmonella-infection/ Bacteria are the least complex type of organisms. They are prokaryotes, meaning they are unicellular (single-celled) organisms. … Continue reading What Is an Organism?

What Are Animal Cells? A Brief Overview of Their Structure

Animal cells are the basic building blocks in animals. Animal cells are eukaryotic cells, which means they have membrane-bound organelles. There are many different types of cells, such as nerve and red blood cells. Membrane-bound means to be surrounded by a thin lining, or membrane. Organelle comes from the word “organ”. An organelle is a … Continue reading What Are Animal Cells? A Brief Overview of Their Structure

Animal Classification: King Cobra, Lion, and Hammerhead Shark

In the previous lesson, I explained how animals are classified using the 8 hierarchical categories of classification: domain, kingdom, phylum, class, order, family, genus, and species. In addition to those, an animal may have a suborder, subfamily, and/or subspecies. Here, we will walk through the full classification of three different species: King Cobra, Lion, and … Continue reading Animal Classification: King Cobra, Lion, and Hammerhead Shark

A Lesson on How Animals Are Classified: American Black Bear

There are 8 groups of classification: DomainKingdomPhylumClassOrderFamilyGenus Species Animals in each group share similar characteristics. Each subsequent group continues to add more specific characteristics on top of the existing ones. Thus, eliminating animals who do not meet the criteria, until you are left with one animal! To better understand each group and their characteristics, let … Continue reading A Lesson on How Animals Are Classified: American Black Bear