Metabolism and Energy Essay - 849 Words

Metabolism is defined the sum of all chemical reactions which occurs and are involved in sustaining life of a cell, and thus an organism. Metabolism is of the following two types: catabolism and anabolism. In catabolism, molecules break down producing energy During anabolism, synthesis of essential compounds needed by the cells are produced (such as DNA, RNA, and protein synthesis). Bioenergetics describes the metabolic pathways by which a cell obtains energy. Nutrition science studies the relation between food substance and living things. The study deals with: 1) Body requirements of various substances. 2) The function of various substances in body. 3) The amount of the substances needed. 4) The lower levels below which health gets†¦show more content†¦MECHANISM OF ATP SYNTHESIS Energy metabolism is the process by which living cells obtain energy and use them to live, grow and reproduce. Energy is released when the chemical bonds of the nutrient molecules break and form high energy compounds such as ATP. ATP is the main chemical energy carrier in all the cells. ATP synthesis can occur by two mechanisms: 1) Synthesis from ADP and inorganic phosphate that takes place in mitochondrion. 2) Synthesis by transfer of high energy phosphoryl groups from high energy compounds to ADP. The synthesis occurs in both mitochondrion and in cytoplasm. OXIDATIVE PHOSPHORYLATION: THE MAIN MECHANISM OF ATP SYNTHESIS IN MOST HUMAN CELLS In the metabolic reactions, oxidation-reduction reactions are very essential for ATP synthesis. The electrons removed in the oxidation are transferred to two major electron carrier enzymes. The electrons are transported through protein complexes in present in the inner mitochondrial membrane. The complexes contain attached chemical groups which are capable of accepting or donating one or more electrons. The protein complexes are known as the electron transfer system (ETS). The ETS allow distribution of the free energy between reduced coenzymes and the O2. The ETS is associated with proton (H+) pumping from the mitochondrial matrix to intermembrane space of the mitochondria. TRICARBOXYLIC ACID CYCLE (TCA) The tricarboxylic acid cycle is known as Krebs cycle, named after SirShow MoreRelatedAnatomy and Physiology - Energy Metabolism1339 Words   |  6 Pagesï » ¿Unit 5: Anatomy and Physiology (P4) Explain the physiology of two named body systems in relation to energy metabolism in the body In this task I am going to discuss the three systems involved in energy metabolism in the body. The chemical equation for cellular respiration is: C6H12O6 + O2 = E + CO2 + H2O OR Glucose + Oxygen = Energy + Carbon Dioxide + Water In order to release energy we need glucose which is a simple carbohydrate that is produced after digestion of food and we also need oxygenRead MoreUnit 5 Energy Metabolism2166 Words   |  9 PagesUnit 5 Outcome 2 – Energy Metabolism Booklet The Respiratory System The respiratory system consists of the nose, mouth, pharynx, larynx, trachea, bronchi and lungs. These provide a passageway to allow air in and out of the body. Every cell in the body requires oxygen to survive. The primary function of the respiratory system is the exchange of gases. The respiratory system allows oxygen and carbon dioxide exchange, this is necessary to sustain life. 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Once the plant has translated the sun’s energy into chemical energy it then releases that energy and makes it readilyRead MoreStudy of Oxygen Consumption to Measure Energy Metabolism in Mammals1510 Words   |  7 PagesStudy of Oxygen Consumption to Measure Energy Metabolism in Mammals Brianne Simonsen Lab Section 8 4 Oct. 2005 Abstract In this experiment the oxygen consumption of a mouse in environments of varying temperatures was studied. The hypothesis behind this experiment was that more oxygen would be consumed at a lower temperature to maintain body heat. To measure the rate of oxygen consumption a mouse was given a specific amount of oxygen. The amount consumed in a specific time was measured andRead MoreA Research On Energy Beyond Our Body s Metabolism1569 Words   |  7 Pagesdetermine energy and oxygen consumption. We ran for hours on treadmills as instruments measured our metabolism. We learned to tap our in the zone mode at will, instead of waiting for a burst of adrenaline. The effort continued for weeks. We confirmed the existence of non-physical, Psionic Energy beyond doubt. The scientists agreed it was a reasonable scientific theory. They went to great lengths to exclude potential flaws in the testing. We failed to tap energy beyond our body s metabolism. We suspectedRead MoreExplain the Physiology of Two Named Body Systems in Relation to Energy Metabolism in the Body1053 Words   |  5 PagesExplain The Physiology Of Two Named Body Systems In Relation To Energy Metabolism In The Body I am going to explain the physiology of the respiratory and cardiovascular system in relation to the energy metabolism in the body. Energy metabolism is where the nutrients oxygen and glucose are took in and delivered the organs. Energy is needed in order for our body to be able to function. Energy helps break down molecules and to build new molecules. The cardiovascular system consists of the heart,Read Moreâ€Å"Explain the Physiology of Two Named Body Systems in Relation to Energy Metabolism in Your Body†1390 Words   |  6 PagesPhysiology for Health and Social Care Assignment 3 Body Systems and their role in Energy Metabolism and The Inter-relationship between Body Systems Anatomy and Physiology for Health and Social Care Assignment 3 Body Systems and their role in Energy Metabolism and The Inter-relationship between Body Systems â€Å"Explain the physiology of two named body systems in relation to energy metabolism in your body† Cardiovascular system The cardiovascular system has many differentRead MoreP4 - explain the physiology of two named body systems in relation to energy metabolism in the body2104 Words   |  9 Pagesof cardiovascular system on metabolism The cardiovascular system provides our cells with oxygen and nutrients, this is so we can get energy. The relationship between the cardiovascular system and metabolism is â€Å"inextricable†, we wouldn’t be able to get nutrients form out food, or oxygen from the air we breathe. The cardiovascular system has to provide oxygenated blood to the rest of the body at a constant speed and in order for this speed to maintain we need enough energy which has to be produced by