6 Kingdoms and 3 Domains Flashcards

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Questions and Answers

What is a prokaryote?

Multicellular organism with a nucleus

Unicellular organism that lacks a nucleus (correct)

Organism with membrane-bound organelles

Organism that can make its own food

What is a eukaryote?

A cell that contains a nucleus and membrane-bound organelles

What are the 6 kingdoms?

Archaebacteria, Eubacteria, Protista, Fungi, Plantae, Animalia

What are the 3 domains?

Bacteria, Archaea, and Eukarya Signup and view all the answers

What is taxonomy?

The science of describing, naming, and classifying organisms Signup and view all the answers

What is a dichotomous key?

Classification tool used in identifying organisms or materials Signup and view all the answers

What is an ecosystem?

Living and nonliving things in an environment, together with their interactions Signup and view all the answers

What is an autotroph?

An organism that makes its own food Signup and view all the answers

What is a heterotroph?

An organism that cannot make its own food Signup and view all the answers

What are archaebacteria?

Bacteria that live under extreme conditions; unicellular prokaryote Signup and view all the answers

What are eubacteria?

Kingdom of unicellular prokaryotes whose cell walls are made up of peptidoglycan Signup and view all the answers

What is Protista?

Kingdom composed of eukaryotes that are not classified as plants, animals, or fungi Signup and view all the answers

What is Fungi?

Kingdom composed of heterotrophs that obtain energy from dead organic matter Signup and view all the answers

What is Plantae?

Kingdom of multicellular photosynthetic autotrophs Signup and view all the answers

What is Animalia?

Kingdom of multicellular eukaryotic heterotrophs Signup and view all the answers

What is bacteria?

Single-celled organisms that lack a nucleus; prokaryotes Signup and view all the answers

What is Archaea?

Grow in extreme conditions, lack nuclei, live in harsh environments Signup and view all the answers

What is Eukarya?

Domain of all organisms whose cells have nuclei Signup and view all the answers

What is reproduction?

The production of offspring Signup and view all the answers

What is phylum?

The major taxonomic group of animals and plants Signup and view all the answers

What is genus?

Group of closely related species, first part of the scientific name Signup and view all the answers

What is a species?

A group of organisms so similar that they can breed and produce fertile offspring Signup and view all the answers

Who is Carolus Linnaeus?

Swedish botanist known as the 'Father of Classification' Signup and view all the answers

What is biotic?

The living organisms in an ecosystem Signup and view all the answers

What is abiotic?

Nonliving, physical features of the environment Signup and view all the answers

What is classification?

The act of distributing things into classes or categories of the same type Signup and view all the answers

Study Notes

Prokaryotes and Eukaryotes

Prokaryotes are unicellular organisms lacking a nucleus; they include bacteria and archaebacteria.
Eukaryotes have a defined nucleus and membrane-bound organelles, encompassing a wide range of organisms from plants to animals.

6 Kingdoms of Life

The six kingdoms are Archaebacteria, Eubacteria, Protista, Fungi, Plantae, and Animalia, classified based on cellular structure, mode of nutrition, and reproductive methods.

3 Domains of Life

The three domains are Bacteria (unicellular prokaryotes), Archaea (extremophiles in harsh conditions), and Eukarya (organisms with eukaryotic cells).

Taxonomy and Classification

Taxonomy is the science devoted to classifying, naming, and describing organisms, aiding in the organization of biological diversity.
A dichotomous key is a tool utilized for identifying unknown organisms through a series of choices based on characteristics.

Ecosystems and Nutritional Strategies

Ecosystems consist of both living (biotic) and nonliving (abiotic) components and their interactions, forming complex relationships.
Autotrophs produce their own food, while heterotrophs obtain food from other organisms.

Kingdom Specifics

Archaebacteria thrive in extreme conditions (high temperatures, salinity); they are unicellular prokaryotes.
Eubacteria are characterized by their peptidoglycan cell walls and also consist of unicellular prokaryotes.
Protista includes eukaryotes that do not fit into other kingdoms, displaying diverse forms of life.
Fungi are eukaryotic heterotrophs that typically decompose dead organic matter, playing a critical role in nutrient cycling.
Plantae comprises multicellular autotrophs with cellulose-based cell walls, primarily photosynthetic.
Animalia consists of multicellular eukaryotic heterotrophs without cell walls, exhibiting various complexities in structure and function.

Taxonomic Hierarchy

Phylum is a major taxonomic category grouping related organisms, sitting above class and below kingdom.
Genus includes a group of closely related species; it is the first part of the scientific name in binomial nomenclature, capitalized.
Species is defined as a group of organisms that can interbreed and produce fertile offspring, representing the most specific classification.

Pioneers in Classification

Carolus Linnaeus, known as the "Father of Classification," developed the binomial nomenclature system, which standardizes the naming of species using Latin terms.

Biotic and Abiotic Factors

Biotic factors encompass all living elements within an ecosystem, including plants, animals, and microorganisms.
Abiotic factors refer to nonliving components such as air, water, sunlight, soil, temperature, and overall climate, which impact ecological dynamics.

Concept of Reproduction

Reproduction is the biological process through which organisms produce offspring, ensuring species continuity.

Act of Classification

Classification involves organizing entities into categories based on shared characteristics, facilitating easier study and understanding of biodiversity.

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Description

Test your knowledge of the six kingdoms and three domains of life with these helpful flashcards. Each card defines key biological terms, including prokaryotes, eukaryotes, and the classification system of life. Perfect for biology students looking to reinforce their understanding of taxonomy.