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Essentials of Anatomy & Physiology 7th Edition by Frederic Martini,Edwin Bartholomew
Edition 7ISBN: 978-0134098845Essentials of Anatomy & Physiology 7th Edition by Frederic Martini,Edwin Bartholomew
Edition 7ISBN: 978-0134098845 Exercise 1
How do vital functions such as responsiveness, growth, reproduction, and movement depend on metabolism?
Explanation
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Metabolism is a term used for a number of chemical reactions that happen in the cells of living creatures. It is responsible for converting the nutrients in the food into energy that is required for life-sustaining activities; such as helping the organisms to mature, reproduce, support their structures, and respond efficiently to their surroundings. Metabolism is consisted of digestion and conveyance of substances from one cell to another. When food is eaten, proteins, fats, and carbohydrates in the food are broken down by some molecules in the digestive system called enzymes into smaller components such as amino acids, fatty acids, and sugars respectively. Besides sugar, amino acids and fatty acids can be consumed as energy by the body when required. Due to absorption of these compounds into the blood, they can be transported to different cells throughout the body. Once the compounds enter the cells, the enzymes inside the cells accelerate or control the chemical reactions of them. Throughout these procedures, the energy from these compounds can either be released for expenditure by body or accumulated in body tissues.
Essentials of Anatomy & Physiology 7th Edition by Frederic Martini,Edwin Bartholomew
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