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7.5 ABC

Photosynthesis, Cycling of Matter, Energy FLow Through Living Systems

QuestionAnswer
Radiant Energy Energy from the Sun that reaches Earth as visible light, ultraviolet light, and infrared radiation (heat)
Photosynthesis A chemical reaction during which plants convert radiation energy from the Sun to chemical energy;v the reaction converts carbon dioxide into sugar (glucose)
Chemical Reactions process by which two or more chemical substances interact and are chemically changed, producing different chemical substances
Molecule the simplest unit of a chemical compound that can exist, formed when two or more atoms join together chemically
Reactants a substance that takes part in and undergoes change during a reaction
Products a substance produced during a chemical reaction
Glucose simple carbohydrate; produced by photosynthesis and used to store energy and build structural molecules
Atom the smallest a particle of an element; made of electrons, protons, and neutrons
Biomass material from living or recently living organisms composed of a mixture or hydrogen, carbon, often nitrogen, and small quantities if other atoms
Decay the natural process or result of being slowly broken down or decomposed; mainly done by bacteria and fungi
Decomposers organisms such as bacteria and fungi that breakdown the remains of dead plants and animals; without the need for internal digestion
Water Cycle the movement of water through the atmosphere, the ground, bodies of water, and living things; the continuous movement of water above, on, and below Earth's surface
Bacteria a highly diverse group of single-celled, prokaryotic organisms
Fungi microorganisms important as decomposers; widely distributed and can break down just about any type of organic matter
Microorganisms organisms too small to be seen by the unaided human eye, such as bacteria and fungi
Detrivore an organisms that feeds on and breaks down dead plant or animal matter; includes decomposers as well as larger organisms such as insects and worms, serving as primary consumers on a food chain
Carbon Cycle the cycle by which carbon is exchanged among the soil, biosphere, lithosphere, hydrosphere, and atmosphere of the Earth
Nitrogen Cycle the process by which nitrogen is converted into various chemical forms as it is exchanged among the soil, biosphere, lithosphere, and atmosphere of the Earth
Energy Transformation the change of energy from one form to another
Heat energy transferred between two objects of different temperatures, moving continually in a predictable pattern from wearmer site to cooler site until all sites have reached the same temperature
Chemical Energy energy stored in chemical bonds and released through chemical reactions
Digestion the process of breaking down food into component molecules that can be absorbed into the body and used for energy and nutrients
Mechanical Energy the sum of the potential and kinetic energy of an object
Thermal Energy the total kinetic energy (motion) of tiny particles that make up matter- the faster the particles, the warmer the matter becomes