Science Quiz / iGCSE Biology Definitions

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Can you name the iGCSE Biology Definitions

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DefinitionKey Term
A system in which the scientific name of an organism is made up of two parts showing the genus and species
A structure made up of groups of tissues, working together to perform body functions
The net movement of molecules from a region of their higher concentration to a region of their lower concentration down a concentration gradient, as a result of random movement
Movement of ions in or out of a cell through a membrane, from a region of their lower concentration to a region of their higher concentration, using energy from respiration
Protein that functions as a biological catalyst
Process by which plants manufacture carbohydrates from raw materials
Something present in the environment in such short supply that it restricts life processes
Chemical reactions that break down nutrient molecules in living cells to release energy
The diffusion of water molecules from a region of their higher concentration to a region of their lower concentration through a partially permeable membrane
The release of a relatively large amount of energy in cells by the breakdown of food substances in the presence of oxygen
The release of a relatively small amount of energy by the breakdown of food substances in the absence of oxygen

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