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Biochemistry : Metabolism Quiz
The set of reactions carried out by an organism is its metabolism. Living things must carry out two major functions in order to survive. They must extract energy from nutrients to use and to store, and they must use the nutrients to synthesize all of the molecules required to carry out life functions. Catabolism refers to metabolic reactions that break down complex biological molecules such as proteins, polysaccharides, triglycerides and nucleic acids for the purposes of forming smaller molecules and energy extraction. Anabolism refers to metabolic reactions that use energy and small building blocks to synthesize the complex molecules necessary to an organism. Adenosine triphosphate (ATP) is the nucleotide energy form in living cells. Photosynthesis is the energy source that fuels metabolism. Plants capture light energy and convert it to chemical energy. Animals get this energy from consuming plants and other animals that eat plants. Photosynthesis is the process that converts sunlight into chemical energy. Glucose and oxygen are produced in this process. The complementary process to photosynthesis is respiration. Respiration is the process by which glucose is broken down to form energy, water and carbon dioxide. This quiz will review the fundamentals of metabolism.
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