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Science Vocabulary 2

Science Words To Learn

TermDefinition
Biology The study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behavior, origin, and distribution.
Organism An individual animal, plant, or single-celled life form.
Biotic (factor) The living components of an ecosystem.
Abiotic (factor) Non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems.
Prokaryotic/Prokaryote A microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles.
Eukaryotic/Eukaryote Any cell or organism that possesses a clearly defined nucleus.
Unicellular Consisting of a single cell.
Multicellular Having or consisting of many cells.
Autotrophic/Autotroph An organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.
Heterotrophic/Heterotroph An organism deriving its nutritional requirements from complex organic substances.
Respiration The action of breathing.
Aerobic Relating to, involving, or requiring free oxygen.
Anaerobic Relating to, involving, or requiring an absence of free oxygen.
Regulation Allows living organisms to adapt to their environment and maintain homeostasis; in government.
Reproduction The production of offspring by a sexual or asexual process.
Sexual The production of new living organisms by combining genetic information from two individuals of different types (sexes).
Asexual A type of reproduction by which offspring arise from a single organism, and inherit the genes of that parent only; it does not involve the fusion of gametes, and almost never changes the number of chromosomes.
Nutrition The process of nourishing or being nourished, especially the process by which a living organism assimilates food and uses it for growth and for replacement of tissues.
Excretion The process by which metabolic wastes and other non-useful materials are eliminated from an organism.
Transport The movement of ions or molecules across a cell membrane in the direction opposite that of diffusion, that is, from an area of lower concentration to one of higher concentration.
Synthesis The production of an organic compound in a living thing, especially as aided by enzymes.
Growth Defined as the irreversible increase in the dry mass of an organism.
Metabolism The sum of the chemical reactions that take place within each cell of a living organism and that provide energy for vital processes and for synthesizing new organic material.
Homeostasis The ability to maintain a constant internal environment in response to environmental changes.
Created by: 1011018