1. Scientists classify organisms to create a hierarchical system that organizes the diversity of life into manageable groups based on their characteristics, similarities and evolutionary relationships. This allows scientists to easily identify, study and compare organisms, as well as understand the evolutionary history of life on Earth. This system of classification also allows for the discovery of new organisms and help in identification of organisms for medical, agricultural, and ecological purposes.
2. The three Domains of life are:
Bacteria (Domain: Bacteria) - An example of organism from this domain is Escherichia coli (E. coli)
Archaea (Domain: Archaea) - An example of organism from this domain is Methanopyrus kandleri
Eukarya (Domain: Eukarya) - An example of organism from this domain is Saccharomyces cerevisiae (yeast)
3. Organism: Homo sapiens (human)
Domain: Eukarya
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Family: Hominidae
Genus: Homo
Species: sapiens
4. No, just because two organisms belong to the same phylum, it does not mean that they are part of the same family. The classification system is hierarchical, and while phylum is a higher level of classification, Family is a lower level classification and includes organisms that share more characteristics, evolutionary history and genetic similarities.
5. No, just because two organisms belong to the same class, it does not mean they are part of the same kingdom. Kingdom is a higher level of classification and encompasses a wider range of organisms with different characteristics and evolutionary history. Class is a lower level of classification and encompasses a group of organisms that share similar characteristics and evolutionary history within the same kingdom.