The eight levels of biological classification are domain, kingdom, phylum, class, order, family, genus and species. These levels are an important part of taxonomy, which is the science of identifying species and organizing them according to systems of classification.Know More
Domain and kingdom are the broadest taxonomic classifications available. All animals belong to the kingdom Animalia, but each species has different characteristics. Genus and species are the most narrow classifications available.
Each taxonomic level has unifying features. Organisms in the phylum Chordata, for example, all have a spinal cord. Members of the class Mammalia nurse their young.
Taxonomic classification allows scientists to identify natural patterns and explain how organisms are related to each other.Learn More
Walther Flemming is the founder of cytogenetics, the study of the structure and workings of cells. He served as a military physician and as a professor of anatomy in Germany.Full Answer >
When biologists describe something as "turgid," they mean it is swollen, bloated, puffed up or inflated. The word is often used to describe an organ's distension due to high fluid content. For example: "Mary drank too much water, so her stomach was achy and turgid." The word comes from the Latin "turgidus," which means "to be swollen."Full Answer >
Physical digestion is the physical process of breaking down food into smaller pieces that can easily be accessed by digestive enzymes, without making any chemical changes, whereas chemical digestion refers to the process through which the mammalian body further breaks down food substances into small, soluble chemicals that can be absorbed into the blood. The chewing of food and movement in the stomach contribute to physical digestion while natural catalysts aid chemical digestion.Full Answer >
A multicelled, or multicellular, organism is any living being comprised of more than one cell. Typically, multicellular life differentiates cells into specialized tasks, which in larger organisms can form tissues and organs. This allows multicellular organisms to have cells that are more efficient at a specific function of life.Full Answer >