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Science Vocab


Classification the division of organisms into groups, or classes, based on specific characteristics.
Archaebacteria a kingdom made up of bacteria that live in extreme environments
Fungi a kingdom made up of non green, eukaryotic organisms that have no means of movement, reproduce by using spores, and get food by breaking down substances in their surroundings and absorbing the nutrients
Taxonomy the science of describing, naming, and classifying organisms
Eubacteria a kingdom that contains all prokaryotes except archaebacteria
Plantae a kingdom made up of complex, multicellular organisms that are usually green, have cell walls made of cellulose, cannot move around, and use the sun’s energy to make sugar by photosynthesis
Dichotomous key an aid that is used to identify organisms and that consists of the answers to a series of questions
Protista a kingdom of mostly one- celled eukaryotic organisms that are different from plants, animals, bacteria, and fungi
Animalia a kingdom made up of complex, multi- cellular organisms that lack cell walls, can usually move around, and quickly respond to their environment
Metabolism the sum of all chemical processes that occur in an organism
Asexual reproduction reproduction that does not involve the union of sex cells and in which one par- ent produces offspring that are genetically identical to the parent
Producer an organism that can make its own food by using energy from its surroundings
Consumer an organism that eats other organisms or organic matter
Decomposer an organism that gets energy by breaking down the remains of dead organisms or animal wastes and consuming or absorbing the nutrients
Scavenger a living creature that takes what is left over from other living things
Stimulus anything that causes a reaction or change in an organism or any part of an organism
Sexual reproduction reproduction in which the sex cells from two parents unite to produce offspring that share traits from both parents
Homeostasis the maintenance of a constant internal state in a changing environment
Cell in biology, the smallest unit that can perform all life processes; cells are covered by a membrane and contain DNA and cytoplasm
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Created by: rihill658