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Unit 3.1 Vocabulary

Unit 3.1- Matter & Energy in Organisms

TermDefinition
Photosynthesis The process by which plants, algae, and some microorganisms use sunlight, carbon dioxide, and water to produce glucose and oxygen.
Cellular Respiration The process by which organisms break down glucose to release energy.
Chemical Reaction A process in which substances are changed into new substances through the rearrangement of atoms.
Reactant A substance that starts a chemical reaction. On the left side of a chemical equation.
Product A substance that is formed in a chemical reaction. On the right side of a chemical equation.
Conservation of Matter The principle that matter cannot be created or destroyed, only rearranged in chemical reactions.
Chloroplast The structure in plant cells where photosynthesis occurs.
Mitochondria The structure in cells where cellular respiration takes place.
Oxygen A gas released during photosynthesis and used by organisms for cellular respiration.
Glucose A sugar molecule produced in photosynthesis that stores energy.
Carbon Dioxide A gas produced by organisms during cellular respiration and used by plants in photosynthesis.
ATP (Adenosine Triphosphate) The molecule that stores and provides energy for cellular processes.
Energy The ability to do work and cause change.
Energy Flow The movement of energy through a system, starting from the Sun and moving through organisms.
Cycle A recurrent series of events or processes.
Ecosystem A system that includes all living things in a particular area and their interactions with nonliving components.
Organism Any living thing.
Created by: MsOlivia
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