Classification Of Living Things Domain
nonliving material. From worms, to blue whales, to bald eagles, animals have evolved to fit a wide variety of habitats. Levels of classification with examples. or more cells. Domain is a level that has been added above Kingdom. Domain Knowledge: Internet of Things, E-health, Smart Cities, Smart Energy Services, Mobile Payment, Business Model, Cloud Computing, Service Oriented Architecture Research Methods: Qualitative Case Studies (Interviews) and Quantitative Survey Methods (e. How are they different? 5. The Task: Create concept cards for each of the following terms c el s,t iu organy m. Classification of living things, animal taxonomy About Classification - An Overview Classification of Living Things. something which displays all the characteristics of living things. Explanation of Living thing in the largest biology dictionary online. The Arbor Day Foundation is a 501(c)(3) nonprofit conservation and education organization. A domain is the largest, most general level of classification. That is how sperm cells can fertilize an egg cell. To understand what makes a living thing alive, you need to look at the common characteristics that define all life. 's—both are valid ways of ordering the living world—but we would argue that their's is less comprehensible to many in the public-domain user communities. Get Started. How to use domain in a sentence. What is the standard rule of classification? Sorting things into groups by how they're alike and different 2. Engage: Transportation Classification: Moving on Up. Patty dropped her notes while she was studying the three domains of living things and the four kingdoms in the domain Eukarya, and now she isn’t sure which facts belong to which domain or kingdom. Title: Scanned Document. Eukara - in the modern taxonomic system, a domain made up of all eukaryotes (organisms with eukaryotic cell) Genus - a class of things that have common characteristics and that can be divided into smaller more specific groups. As well, all living organisms contain some means of converting the information stored in DNA into products used to build cellular machinery from fats, proteins, and carbohydrates. Classification of the White Shark and Selected Other Creatures. Classification has changed as science has. Read about the Classification of Living Things!. classifying plants according to their uses in agricultural experiments. The science of classification, in biology the arrangement of organisms into a classification "The science of classification as applied to living organisms, including study of means of formation of species, etc. Taxa range from the domain to the species. Living things are made up of cells. " "The analysis of an organism's characteristics for the purpose of classification". Most children are fascinated by animals and often have an animal that is a particular favorite, possibly even an animal the child has never seen before. The genus and species names are. Posts about Trieste Kelly Dunn written by Matty Stanfield. Domain: bacteria Kingdom: Bacteria Phylum: Firmicutes Class: Bacilli Order: Lactobacillales Family: Streptococcaceae Genus: Streptococcus Species: Streptococcus. Aristotle (384-322 BC) the Greek philosopher was the first to attempt to classify all living things, and some of his groups are still used today, like the vertebrates and invertebrates, which he called "animals with blood and without blood". 5g/18mm AE CELTIC Coin AE @ANT1284. The domain is the largest and most. Unlike Whittaker's five kingdoms system, Woese's three domains system organizes biodiversity by evolutionary relationships. Spending on employee wages, for instance, is an expense because it uses up cash assets. On the blanks to the left of each statement, write the life characteristic referred to in the statement. Quiz over taxonomy and how organisms are classified into kingdoms and phyla and then to the species level. According to King Philip, what is the classification system? Way of arranging things that go together 3. Basically, it is a biological classification of the three domains of life based on the differences in their 16S rRNA genes. Characteristics of all living things: Organisms obtain and use resources. • Domain • Kingdom• Phylum• Class• Order• Family• Genus• Species3. Each domain is subdivided into kingdoms, followed by phyla, class, order, family, genus, and species. There are currently 5 Kingdoms protista, bacteria, archaea, plants, animals, and fungi. consumers, and must rely on other living things, such as plants, fungi, and other animals to sustain them. Any living thing. Primary Booklet 5 - Grouping and Classification One of a series of booklets written to support plant science in the Primary Curriculum, now available to download. classification definition: The definition of classification is a grouping of people or things in a systematic way. Without other food sources, animals could not survive. Feel free to print these worksheets and use them with your class. Knowing how the datil yucca fits into a classification system, we can more clearly understand its biological place among the living things of our desert. The closer they are related, the more groups they will be in together. nonliving material. Biologists have categorized life into three large domains: Bacteria, Archaea (weird, bacteria-like microbes), and Eukarya (unicellular and multicellular organisms such as fungi, plants, and animals that possess nucleated cells). Domain as the largest (broadest) classification of living things. Taxonomy is a branch of science. Eukaryotic The Eukarya domain includes eukaryotes, or organisms that have a membrane bound nucleus. 7th Grade Science Classification Unit Information Milestones Domain/Weight: Evolution 15% Purpose/Goal(s): Students will investigate the diversity of living organisms and how. Instead, they are frameworks created by biologists to help them understand and describe the vast diversity of organisms and suggest relationships among living things. Woese attended Amherst. From the late 1960's, organisms had been classified according to a Five Kingdom system. The broadest division of organisms has been into kingdoms. Kingdoms The most basic classification of living things is kingdoms. According to the three domain system of classification, organisms were grouped under three domains – Domain Bacteria, Domain Archaea and Domain Eukaryota. Cardiology The medical study of the heart. Animals are living organisms. It groups living things according to the structural. Protist (Protista) Eubacteria. Explanation of Living thing in the largest biology dictionary online. List them below. As well, all living organisms contain some means of converting the information stored in DNA into products used to build cellular machinery from fats, proteins, and carbohydrates. The classification system of living things is still changing. Break down your descriptions by taxa. The 3 Domains are the highest level of classification to date. The classification of organisms has various hierarchical categories. Hence, none of these fit easily into existing classification systems. Classification 2. Systematics - the study of evolutionary relationships between living things Taxonomy - the classification and naming of living things The greater goal: Discover how the branches of the Tree of Life connect and diverge, giving a history of the evolution of life on earth. Students will learn and understand that the classification system divides living things into groups by their similarities and differences. Elaborate Step- Classification of Living Organisms Activity (1/2 class period, more if extension is done) This activity involves having the students classify different groups of living things into categories and then Domains and Kingdoms based on their characteristics. FBI Federal Bureau of Investigation. The domains divide into branches called kingdoms, which divide according to phyla, and then to classes, orders, families, genera and species. Aristotle (384-322 BC) the Greek philosopher was the first to attempt to classify all living things, and some of his groups are still used today, like the vertebrates and invertebrates, which he called "animals with blood and without blood". An example of Classification Biological classification works a bit like the library does. Quia - The Six Kingdoms Quiz Home FAQ About Log in Subscribe now 30-day free trial. This is called, Biological Classification. Title: Biology Domains And Kingdoms Activity Keywords: Biology Domains And Kingdoms Activity Created Date: 11/3/2014 1:17:17 PM. Carl Linnaeus: 1707 - 1778 First proposed a classification system for living things. Biological classification begins with big, general groups and gets smaller and more specific as they are broken down further. The Linnaean system (1758) classified all macroscopic living organisms as either Animals or Plants, based on whether they moved [anima, with a soul] or not. This means they breathe, they eat, they grow and they reproduce (make more like themselves). Choose from 500 different sets of classification 5 living things flashcards on Quizlet. Almost all workers agree that these two superkingdoms reflect a basic difference in organization of living organisms. classification of living organisms: A systematic method of assigning organisms to various groups. Viruses, prions, and other non-cellular organic entities are not included in the domains and kingdoms of living things. You will focus on the kingdom Animalia and its diverse set of members as you explore the various levels at which organisms can be classified. He tried to classify all living things that were known at his time. Introduction. There are three domains that include all the living things on Earth. According to King Philip, what is the classification system? Way of arranging things that go together 3. Adult Body Mass Index (BMI) Body Mass Index (BMI) is a person’s weight in kilograms divided by. A single organism has the ability to eat 5,000 bacteria a day. They were placed either in a separate category called Chaos or, in some cases; they were. To understand what makes a living thing alive, you need to look at the common characteristics that define all life. Characteristic Domain A Domain B Domain C Single celled Some Yes Yes Cell wall Yes Yes Nuclear envelop e No No Ribosomes Yes ? Yes Membrane bound organelles No No. The domain is the largest and most. Species is the smallest level of classification. The Linnaean system (1758) classified all macroscopic living organisms as either Animals or Plants, based on whether they moved [anima, with a soul] or not. The act of organizing different types of living things into groups is called classification, and taxonomy is the scientific study of these classifications. From one type of taxonomy, many classifications might be produced. Domain- the highest level of classification that includes the most organisms. after the class level and before the family level C. Science Grade 06 Unit 11 Exemplar Lesson 02: Domains and Kingdoms This lesson is one approach to teaching the State Standards associated with this unit. Play this game to review Science. Classification of Microorganisms Naturally. Classification of Reptiles. Taxonomy: The science of classifying organisms. Classification of bacteria on the basis of nutrition: – On the basis of nutrition bacteria are classified as following: 1) Autotropic bacteria: - these bacteria are nonpathogenic, free living, self sustaining in nature, which prepare their own food by utilisation of solar energy and inorganic components like carbon dioxide, nitrogen etc. Microbes are very diverse and represent all the great kingdoms of life. As knowledge increases, the three-domain system may need revision. Hierarchy of Living Things Biological organization , or the hierarchy of life , is the hierarchy of complex biological structures and system that define life using a reductionistic approach. The smallest unit of a living thing that carries on the functions of life. A conspicuous looking zebra wanders grassy plains (left), while a white tiger looks majestic, the master of its territory (right). Form and Function. Powered by Create your own unique website with customizable templates. 3: The student knows that science dis-ciplines differ from one another in topic, techniques, and out-comes but that they share a common pur-pose, philosophy, and enterprise. Domains are divided into kingdoms, and then phyla, classes, orders, families, genera, and species. The Three Domain System, developed by Carl Woese, is a system for classifying biological organisms. It was developed by the Swedish botanist Carolus Linnaeus, who lived during the 18 th Century, and his system of classification is still used today. Phylum- similar phyla belong to the same kindoms. Name 2 types of. Biological classification begins with big, general groups and gets smaller and more specific as they are broken down further. Classification of Living Things Six Kingdoms Atlantic Union Conference Teacher Bulletin www. Three Domains of Life. something which displays all the characteristics of living things. Product Hunt is a curation of the best new products, every day. Domain: bacteria Kingdom: Bacteria Phylum: Firmicutes Class: Bacilli Order: Lactobacillales Family: Streptococcaceae Genus: Streptococcus Species: Streptococcus. This quiz will review the characteristics of each of the six kingdoms of living things. The major insight upon which the five-kingdom classification is based is the recognition that the differences between prokaryotes and eukaryotes are probably the most profound in the living world. For the next items 20 - 29 decide which animal is least related (according to biological classification) to the other three. This involved giving every organism two names, a genus (with a capital letter) and a species (with a lower case letter). Organisms are divided into three domains: Archaea, Bacteria and Eukarya. FBI Federal Bureau of Investigation. aureus, etc. The student will understand that living things have characteristics that enable them to survive in their environment. Classification of Living Things Chapter 9 Unit Essential Question How are living things classified? Page 3Life Science Mr. Animals have babies and most plants use seeds. ""Star>ng"with"the"largest. respond to a stimulus_ An earthworm turns away from. Classifications should have predictive value, that is, they should tell us something about the object being named and its features. Characteristics of Life- Lesson ; What is Life PHLS- Powerpoint; Intro to Science- Powerpoint; UPCO: Chapter 1-Biology and Scientific Inquiry - Powerpoint; Caracteristics of Life-Worksheet ; What is Life?- Video; Characteristics of Life- Video; Life Processes. The building block of living things Preview this quiz on Quizizz. The species name is also used to identify organisms in classification. By the 1990s, scientists grouped all living things into one of six kingdoms: plants, animals, protista, fungi, eubacteria (modern bacteria) and archaebacteria (ancient bacteria) Scientists today have also developed one other taxon that is larger and more inclusive than the kingdom, the domain. Within the domains, living things are sorted into Kingdoms. Classification of organisms 1. Grade 6 Diversity and Adaptation Among Living Things. Curbing Car Crimes. Eventually, scientists realized that Linnaeus’s system of classification needed revision. The 3 Domains are the highest level of classification to date. A living system also consists of cycles between chemical components: metabolic activity among proteins, amino acids, fats, sugars, etc. Taxonomy is the practice of identifying different organisms, classifying them into categories, and naming them. The domains are Bacteria, Archaea, and Eukarya. Organisms grow by increasing the size and/or number of their cells. ) Assigning them to any of the 3 domains C. The position of a genus, in classification of the kingdoms of living forms, is below family or subfamily, and above species. • This philosopher's. Kingdom Animalia - From snails to birds to mammals like you!. Our classification is not intended to compete with a cladification such as Adl et al. Classification of Living Things Heather Spalding: University of Hawaii-Manoa GK-12 program VOCABULARY - Write the term next to the definition. Below is an explanation of how Vulpes vulpes fits into each taxonomic ranking. He believed he could: Put every organism into a group (the science of TAXONOMY) Give every organism a name (the science of NOMENCLATURE). Domain is the most inclusive level of organization. D Classify specific kinds of relationships among plants and animals within an ecosystem. Scientists place living things in groups based on the features that the living things share. The Tree of Life - Wherever they're found, all living things are related because they all share a common ancestor. Read about the Classification of Living Things! Afterwards, cut out the puzzle piece. Taxonomy is a branch of Biology that refers to the process of classifying different living species. In the past scientists used to classify living things into either the plant or animal kingdoms. is a living thing. , an approach to the classification of living things in which organisms are defined and grouped by the possession of one or more shared characteristics (called characters) that are derived from a common ancestor and that were not Click the link for more information. Domain Archaea (archaebacteria) Domain Bacteria (eubacteria) Domain Eukarya (eukaryotes)-true nuclei with linear chromosomes and membrane—bound organelles. Science Grade 06 Unit 11 Exemplar Lesson 02: Domains and Kingdoms This lesson is one approach to teaching the State Standards associated with this unit. Classification of living beings according to their level of cellular organization : You can find; prokaryotic organisms, unicellular eukaryotes and multicellular eukaryotes. They are also non-living things. Classification of Living Things Diversity of Life By: Mr. Seventh Grade (Grade 7) Taxonomy questions for your custom printable tests and worksheets. Some protozoa are capable of causing diseases in humans and other animals. Describe the three domains. What others are saying Classification of living things, animal taxonomy About Classification - An Overview Classification of Living Things. The eight orders of sharks. Classification of Living Things Chapter 9 Unit Essential Question How are living things classified? Page 3Life Science Mr. The Linnaean system of classification consists of a hierarchy of groupings, called taxa. How many living things are there on the planet? What are kingdoms?. Each level of classification gets more specific, running down to the specific species that the animal is. They include all known living things on Earth - Archaea, Eubacteria and Eukaryota. Currently there are five kingdoms. The three domains are organized based on the difference. Taxonomy: The science of classifying organisms. Aristotle (384-322 BC) the Greek philosopher was the first to attempt to classify all living things, and some of his groups are still used today, like the vertebrates and invertebrates, which he called "animals with blood and without blood". Eukaryotes are living things that have more complex cells. Although standard classification is listed as kingdom, phylum, class, order, family, genus and species, there are also in-between categories. Living Things Have Different Levels of Organization Cell - tissue - organ- organ system 3. Previously, only the 5 kingdom system existed. The act of classification can be defined as ‘the grouping of individuals so that all the individuals in one group have certain features or properties in common’. Classification: putting things into orderly groups based on similar characteristics Taxonomy: the science of describing, naming, and classifying organisms Early classification Aristotle grouped everything into simple groups such as animals or plants He then grouped animals according to if they had blood or didn’t have blood, and if they had live young or laid eggs, and so on…. How Many Kinds of Living Things Are There? We call this a classification system or a and that it is helpful to organize the various kinds of living things into domains and kingdoms. Domains can be broken down into 4 different groups called Kingdoms. He published his ideas in his book "Systema Naturae" in 1735. One reason common names are not useful to biologists is that they a. Phylogeny describes the evolutionary history of a species or a group of species. Some protozoa are capable of causing diseases in humans and other animals. Living Things Use Energy Living things take in energy and use it for maintenance and growth. Use Target Reading Skills Before you read, preview the red headings. Living and nonliving things alike are composed of elements. Domain: Archaea Kingdom: Euryarchaeota Phylum: Euryarchaeota Class: Halobacteria Order: Halobacteriales Family :Halobacteriaceae Genus :Halobacterium Species: H. Use this information to complete the next three questions. Choose from 500 different sets of classification 5 living things flashcards on Quizlet. General Biology/Classification of Living Things. depending on their characteristics. after the class level and before the family level C. From Wikibooks, open books for an open world Classification and Domains of Life; General Biology/Classification. Explores classification in biology as well as taxonomy hierarchy: domain, kingdom, phylum, class, order, family, genus, and species with The Amoeba Sisters! This video also discusses the. Basically, it is a biological classification of the three domains of life based on the differences in their 16S rRNA genes. the genus name indicates the type of organism. Quia - The Six Kingdoms Quiz Home FAQ About Log in Subscribe now 30-day free trial. Today it is customary to use a classification system that uses five kingdoms, and many scientists favor six. Cardiology The medical study of the heart. Phylogeny - the evolutionary history of an organism. Color"the"name"of"the"level"of"classiﬁcaon"and. As our understanding of life has changed over the past few centuries, we have. are too long. Write this name correctly in the space below. Districts are encouraged to customize this lesson by supplementing with district-approved resources, materials, and activities to best meet the needs of learners. View Essay - CLASSIFICATION OF LIVING THINGS from BUSINESS A 210216905 at Cape Peninsula University of Technology. Are they Prokaryotic cells or Eukaryotic cells? 8. between the order and phylum levels. The best-known kind of taxonomy is used for the classification of lifeforms (living and extinct). Taxonomic classification, or taxonomy, is used to help identify all living things (animals, plants and other organisms on earth) and to group them with related species. Grade 6 Diversity and Adaptation Among Living Things. Taxonomy is the study of classification, or how living things are grouped. Zebras belong to the mammal order. Archaea are prokaryotes, meaning that they are single-celled organisms that do not have a nucleus. Unicellular Organisms. UPCO: Chapter 3-Characteristics of Living Things/ Life Processes- Powerpoint. Below are the 5 main TAXONOMIC GROUPS. Name the four kingdoms of the Domain Eukarya and recognize a description of each. All arthropods have segmented bodies divided into a head, jointed legs and abdomen. Bacteria domains contain prokaryotic organisms. The Task: Create concept cards for each of the following terms c el s,t iu organy m. things, some that make food and some that hunt for food (ex. The kingdoms, archaebacteria and eubacteria , used to be one kingdom called the Monera Kingdom. All living things can be placed into one of six major categories called ‘Kingdoms’: Animal (Animalia) Plant (Plantae) Fungi. Classification is used to group together plants and animals which are closely related. By now you should be getting the hang of how scientists classify living things. This will make you consider possibilities you otherwise might overlook, and will help you learn what kind of name is right for your company, product, or service. It is part of the Domain Archae. For instance, as a result of the discovery of a dramatically new form of life known as archaeobacteria, a growing number of researchers now use a classification level above kingdoms referred to as a domain. The ASSETGROUP field is used for major classification, while the ASSETTYPE field is used for minor classification of network features. Prokaryotes are the smallest forms of life that can live independently. Classification •Linnaeus's hierarchical system of classification includes eight levels (from largest to smallest) •Grizzly Bear (common name) -Domain Eukarya -Kingdom Animalia -Phylum Chordata -Class Mammalia -Order Carnivora -Family Ursidae -Genus Ursus -Species arctos Each of the levels is called a TAXON Ursus arctos. For thousands of years people have known how living things differ from lifeless things. Grimpoteuthis spp, known as the deepest living of all octopus species, live on the bottom, or hovering just slightly above the seafloor at depths of depths of 3000 to 4000 m (9800 to 13000 ft), with some living as deep as 7,000 m (23000 ft) below sea level. How Many Kinds of Living Things Are There? We call this a classification system or a and that it is helpful to organize the various kinds of living things into domains and kingdoms. A dichotomous. Classifying Living Things with emphasis on the Linnaean system combined with the concept of Domains. The Woese classification represents a demotion of the animals and plants as individual kingdoms. Define phylogeny. Animals from A-Z - Use this link to research living things from the animal kingdom Kingdoms Virtual Lab- Students will identify living things dragging them to the category which they belong. Click on Eubacteria. ) to classify o Starts with. Choose from 500 different sets of classification 5 living things flashcards on Quizlet. As knowledge increases, the three-domain system may need revision. Genus: Vulpes. Being overweight is defined as a person with a body mass index(BMI) of 25 or over. In the past scientists used to classify living things into either the plant or animal kingdoms. The domain EUKARYA is used for all eukaryotic species that include protists, fungi, plants, and animals. Adapt to Their Surroundings. Skills to Develop. Learn classification of living things with free interactive flashcards. The modern classification of living things is called taxonomy which subdivides the groups into 7 classes of groups (by size) each with several members. Currently there are five kingdoms. Learn about mammals, reptiles, birds, amphibians, and fish. Name that Kingdom!. Organisms from Eukaryota are considered eukaryotic organisms meaning that they have a cell nucleus and other cells that are packed within a membrane. Primary Booklet 5 - Grouping and Classification One of a series of booklets written to support plant science in the Primary Curriculum, now available to download. allows the subdivision of living organisms into smaller and more specialised groups. Within each of the three domains, we find kingdoms, the second category within taxonomic classification, followed by subsequent categories that include phylum. Get Started. The cougar has the scientific name FELIS CONCOLOR. The numbers of named and estimated total species were derived from Gibbs, W. Two Kingdoms Classification: In his Systema Naturae, first published in 1735, Carolus Linnaeus distinguished two kingdoms of living things: Animalia for animals and Plantae (Vegetabilia) for plants. All living things are divided into seven categories using Latin terms that can be understood worldwide. It includes all closely related classes. This was the beginning of modern scientific classification. There are six major kingdoms that fall under the three domains that organisms can be grouped into. In one classification system, there are 2 main groups. How are they different? 5. Fungi Kingdom • The Kingdom Fungi includes some of the most important organisms. Advertisements. pdf), Text File (. methanogens, thermophiles, etc. A lion is in the same genus as a house cat, (Felis), but is in the leo species in stead of the same one as a house cat. Domain- the highest level of classification that includes the most organisms. Living things are CLASSIFIED into GROUPS. Within each of the three domains, we find kingdoms, the second category within taxonomic classification, followed by subsequent categories that include phylum. What is the Difference Between Kingdom and Domain? Three domains or five kingdoms are two types of classification systems to categorise living organisms. The Arbor Day Foundation is a 501(c)(3) nonprofit conservation and education organization. Scientists place living things in groups based on the features that the living things share. The Linnaean system of classification consists of a hierarchy of groupings, called taxa. o Why do living things need to be classified? o What are the levels/taxa used to classify living things? organisms more precisely. Choose from 500 different sets of classification 5 living things flashcards on Quizlet. Engage: Transportation Classification: Moving on Up. A New Proposal: The Three Domains of Life (Carl Woese, 1990) Starting in the early 1970s, Dr. They are not used for classification unless phylogenetic groups are specifically called for. Classification of Living Things Notes Taxonomy – the science of naming, describing, and classifying organisms Carolus Linnaeus (1700s) o Classified organisms into 2 kingdoms o Developed binomial nomenclature Systematics (modern classification) o Uses many kinds of evidence (cell type, structure, DNA, habitat, etc. The traditional hierarchy, as detailed below, extends from atoms (or lower) to biospheres. Unlike Whittaker's five kingdoms system, Woese's three domains system organizes biodiversity by evolutionary relationships. Name & Evolution. Domains • Domains are the broadest taxonomic classification of living organisms • The three Domains: Archaea Bacteria Eukarya 10 11. " "The analysis of an organism's characteristics for the purpose of classification". • • • • • • • • The Seven Level System Domain Kingdom Phylum Class Order Family Genus Species • • • • • • • • Dear King Phillip Called Oprah For Good Spices 10. The most general category in taxonomic classification is domain, which is the point of origin for all species; all species belong to one of these domains: Bacteria, Archaea, and Eukarya. Get Started. As knowledge increases, the three-domain system may need revision. Classification, or taxonomy, is a system of categorizing living things. The Text: Organization of Life (pages 4!8) of Cells, Heredity, and Classification byHolt. Kingdom definition, a state or government having a king or queen as its head. Some living things, such as trees, may show very little movement. Systematics uses all the evidence that is known about organisms to classify them. Classifying Living Things with emphasis on the Linnaean system combined with the concept of Domains. This Includes Protista, Plantae, Fungi, and Animalia. Mammals, birds, fish, amphibians, and reptiles are all vertebrates. Of these bacteria, those harmful and useful to humans are widely studied in medicine and pharmacy. Eukaryotes are living things that have more complex cells. For instance, as a result of the discovery of a dramatically new form of life known as archaeobacteria, a growing number of researchers now use a classification level above kingdoms referred to as a domain. There are three domains of life, the Archaea, the Bacteria, and the Eucarya. At the top of the classification system (shown to the right) are three domains.