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Biology

Biology - Unit 1 - WGU

TermDefinition
BIOLOGY Scientific study of life. Vast subject divided into many branches or subdivisions representing areas of specialization. Branches include anatomy, biochemistry, ecology, evolution, genetics, immunology, and physiology.
CELL Smallest fundamental unit of structure & function in life. Fluid-filled spaces bound by a membrane. When first formed, all include DNA & other macromolecules & are organized to grow, reproduce, & respond to changes in the external environment.
ABIOTIC Nonliving AND has never been alive
BIOTIC Living or have lived
ATOM Basic unit of matter that cannot be further broken down without losing its unique properties. One atom consists of a dense nucleus surrounded by a cloud of electrons.
MOLECULE Two or more atoms held together by a chemical bond.
MACROMOLECULE Produced by living organisms that contain carbon atoms covalently bonded to hydrogen atoms (carbohydrates, nucleic acids, lipids, and proteins) (DNA)
ORGANELLES Specialized structures within a cell, formed when a specific set of molecules bond, creating a subunit that has a specific function. Some are membrane bound. Others, such as flagella and ribosomes, are not.
TISSUES Group of similar cells carrying out the same detailed function with an organism. In the lung, for instance, the lining of airways comprises one type: a layer of similar cells that forms a sealed surface.
ORGANS Collection of tissues grouped together based on a common general function. (heart, lungs, and kidneys)
ORGAN SYSTEM Integrated collection of organs in the body that work together to perform a vital function.
ORGANISM Individual living entity that survives & reproduces as a unit (single bacterial cell, plant grown from a single seed, or you - as a human). Include any type of life form (animal, plant, fungus, bacteria, protist, or single-celled entity)
POPULATION All the individuals of the same species that occupy the same area and are likely to breed with one another.
COMMUNITY All of the populations interacting with each other within a specified area.
PROKARYOTES Relatively small and simple - they do not have any clearly defined compartments inside of them.
EUKARYOTES Include membrane-bound organelles: compartments inside the cell that contain specific groups of macromolecules and carry out specific cellular functions. One of these organelles is the nucleus; it encloses the DNA within the cell.
ECOSYSTEM All the living (biotic) things in a particular area together with the abiotic (nonliving) materials and conditions in that area (biological community and its physical environment)
BIOMES Patterns of distribution of ecosystems across the globe, where similar environmental conditions lead to similar animal and plant adaptations (tropical rainforests, deserts, and tundra)
BIOSPHERE All areas on, within, and around the planet Earth that are capable of supporting life.
SCIENTIFIC INQUIRY The application of scientific observation, experimentation, and the scientific method to study, interpret, and predict natural phenomena in the world around us.
Created by: StubbyJane
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