Biology 1 Vocabulary

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Archaea

Back 1

One of two prokaryotic domains (the other being bacteria)

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Bacteria

Back 2

One of two prokaryotic domains (the other being Archaea)

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Biology

Back 3

The scientific study of life

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Biosphere

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The entire portion of Earth inhabited by life; the sum of all the planets ecosystems

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Cell

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Life's fundamental unit of structure and function

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Community

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All organisms in an ecosystem

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Constant

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Something that remains the same in an equation

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Control

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Something that remains the same in an experiment

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Dependent Variable

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A variable whose value is measured during an experiment or other test to see whether it is influenced by changes in another variable (the independent variable)

Hint 9

The variable that is being changed.

It DEPENDS on the independent variable.

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Domain

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A taxonomic category above the kingdom level (the three domains are Archaea, Bacteria, and Eukarya)

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Dependent Variable

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A variable whose value is measured during an experiment or other test to see whether it is influenced by changes in another variable (the independent variable)

Hint 11

The variable that is being changed.

It DEPENDS on the independent variable.

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Domain

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A taxonomic category above the kingdom level (the three domains are Archaea, Bacteria, and Eukarya)

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Ecosystem

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All living and nonliving things in a particular area

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Emergent Properties

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New properties that arise with each step upward in the hierarchy of life, owing to the arrangement of interactions of parts as complexity increases

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Emergent Properties

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New properties that arise with each step upward in the hierarchy of life, owing to the arrangement of interactions of parts as complexity increases

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Eukarya

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The domain that includes all eukaryotic organisms

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Emergent Properties

Back 17

New properties that arise with each step upward in the hierarchy of life, owing to the arrangement of interactions of parts as complexity increases

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Eukarya

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The domain that includes all eukaryotic organisms

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Eukaryotes

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Eukaryotes include protists and the kingdoms Plantae, Fungi, and Animalia

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Emergent Properties

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New properties that arise with each step upward in the hierarchy of life, owing to the arrangement of interactions of parts as complexity increases

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Eukarya

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The domain that includes all eukaryotic organisms

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Eukaryotes

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Eukaryotes include protists and the kingdoms Plantae, Fungi, and Animalia

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Evolution

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Descent with modification; the idea that living species are descendants of ancestral species that were different from the present day ones; also defined more narrowly as the change in the genetic composition of a population from generation to generation

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Emergent Properties

Back 24

New properties that arise with each step upward in the hierarchy of life, owing to the arrangement of interactions of parts as complexity increases

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Eukarya

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The domain that includes all eukaryotic organisms

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Eukaryotes

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Eukaryotes include protists and the kingdoms Plantae, Fungi, and Animalia

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Evolution

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Descent with modification; the idea that living species are descendants of ancestral species that were different from the present day ones; also defined more narrowly as the change in the genetic composition of a population from generation to generation

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Feedback Regulation

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The regulation of a process by its output or end product

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Kingdom

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A taxonomic category, the second broadest after domain

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Molecule

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Two or more atoms held together by covalent bonds

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Negative Feedback

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A form of regulation in which accumulation of an end product of a process slows the process; in physiology, a primary mechanism of homeostasis, whereby a change in a variable triggers a response that counteracts the initial change

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Negative Feedback

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A form of regulation in which accumulation of an end product of a process slows the process; in physiology, a primary mechanism of homeostasis, whereby a change in a variable triggers a response that counteracts the initial change

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Null Hypothesis

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The hypothesis that there is no significant difference between specified populations, any observed difference being due to sampling or experimental error

Hint 33

Often the null hypothesis is expressed as "There is no relationship between two quantities."

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Organ

Back 34

A specialized center of body section composed of several different types of tissues

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Organ

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A specialized center of body section composed of several different types of tissues

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Organelle

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Any of several membrane- enclosed structures with specialized functions, suspended in the cytosol of Eukaryotic cells

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Organ

Back 37

A specialized center of body section composed of several different types of tissues

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Organelle

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Any of several membrane- enclosed structures with specialized functions, suspended in the cytosol of Eukaryotic cells

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Organism

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An individual living thing that can react to stimuli, reproduce, grow, and maintain homeostasis (It can be a virus, bacterium, protist, fungus, plant or an animal)

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Organ

Back 40

A specialized center of body section composed of several different types of tissues

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Organelle

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Any of several membrane- enclosed structures with specialized functions, suspended in the cytosol of Eukaryotic cells

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Organism

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An individual living thing that can react to stimuli, reproduce, grow, and maintain homeostasis (It can be a virus, bacterium, protist, fungus, plant or an animal)

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Population

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All individuals of a species in a particular area

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Positive Feedback

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A form of regulation in which an end product of a process speeds up that process; in physiology a control mechanism in which a change in a variable triggers a response that reinforces or amplifies the change

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Positive Feedback

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A form of regulation in which an end product of a process speeds up that process; in physiology a control mechanism in which a change in a variable triggers a response that reinforces or amplifies the change

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Prokaryote

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a microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles (Prokaryotes include the bacteria and cyanobacteria)

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Tissue

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An integrated group of cells with a common structure, function, or both