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Science Vocabulary 6

Science Words To Learn

TermDefinition
Energy the capacity to do work; the property of a system that diminishes when the system does work on any other system.
Cellular respiration the oxidation of organic compounds that occurs within cells, producing energy for cellular processes.
Mitochondria an organelle in the cytoplasm of cells that functions in energy production.
Glycolysis the catabolism of carbohydrates, as glucose and glycogen, by enzymes, with the release of energy and the production of lactic or pyruvic acid.
Aerobic pertaining to or caused by the presence of oxygen.
Anaerobic pertaining to or caused by the absence of oxygen.
Adenosine triphosphate (ATP) an ester of adenosine and triphosphoric acid,C10H12N5O4H4P3O9, formed especially aerobically by the reaction of ADP and an orthophosphate during oxidation.
Enzyme any of various proteins, as pepsin, originating from living cells and capable of producing certain chemical changes in organic substances by catalytic action, as in digestion.
Photosynthesis the complex process by which carbon dioxide, water, and certain inorganic salts are converted into carbohydrates by green plants, algae, and certain bacteria, using energy from the sun and chlorophyll.
Chloroplast a plastid containing chlorophyll.
Chlorophyll the green coloring matter of leaves and plants, essential to the production of carbohydrates by photosynthesis.
Xylem a compound tissue in vascular plants that helps provide support and that conducts water and nutrients upward from the roots, consisting of tracheids, vessels, parenchyma cells, and woody fibers.
Glucose a simple sugar that is an important energy source in living organisms and is a component of many carbohydrates.
Stomata any of the minute pores in the epidermis of the leaf or stem of a plant, forming a slit of variable width that allows movement of gases in and out of the intercellular spaces.
Phloem the vascular tissue in plants that conducts sugars and other metabolic products downward from the leaves.
Grana the stacks of thylakoids embedded in the stroma of a chloroplast.
Palisade layer a layer of parallel elongated cells below the epidermis of a leaf.
Spongy layer a layer of loosely packed and irregularly shaped chlorophyll-bearing cells that fills the part of a leaf between the palisade layer and the lower epidermis
Guard cell each of a pair of curved cells that surround a stoma, becoming larger or smaller according to the pressure within the cells.
Stroma the supportive tissue of an epithelial organ, tumor, gonad, etc., consisting of connective tissues and blood vessels.
Created by: 1011018