Constructive chemical changes in a living cell.
The sum of all chemical processes occurring within a living cell or organism.
The processes of interconversion of chemical compounds in the body. Anabolism is the process of forming larger and more complex compounds, commonly linked to the utilisation of metabolic energy. Catabolism is the process of breaking down larger molecules to smaller ones, commonly oxidation reactions linked to release of energy. There is approximately a 30% variation in the underlying metabolic rate (basal metabolic rate) between different individuals, determined in part by the activity of the thyroid gland.
The chemical reaction of a cell or living tissue that transfers usable materials into energy.
The total of all energy transformations that occur in the body.
The total of all chemical changes that take place in a cell or an organism. These changes produce energy and basic materials needed for important life processes.
The entire set of enzyme-catalyzed transformations of organic nutrient molecules (to sustain life) in living cells. Conversion of food and water into nutrients that can be used by the body’s cells, and the use of those nutrients by those cells (to sustain life, grow, etc.).
The sum total of changes in an organism in order to achieve a balance (homeostasis). Catabolic bums up, anabolic stores and builds up; the sum of their work is metabolism.
The sum of the chemical reactions in the body that are necessary to sustain life. All metabolic processes are driven by energy derived from the major nutrients in foods.
The complex process that is the fundamental chemical expression of life itself and the means by which food is converted to energy to maintain the body.
The various vital processes that are necessary for bodily functions. These processes include breaking down complex molecules to produce energy (catabolism) and building up complex molecules, such as proteins, from simpler components (anabolism).
The sum of the chemical processes within the body necessary for building protoplasm, breaking down chemical substances, and providing energy for maintenance of the vital process.
The chemical processes which are continually taking place in the human body and which are essential to life, especially the processes that convert food into energy.
Chemical changes by which foods are built up into body tissues ( anabolism ) or broken down into energy or waste products destined for excretion (catabolism).
The chemical changes in living cells by which energy is produced and new material is assimitated tor the repair and replacement of tissues.
The sum of all the anabolic and catabolic reactions that take place in the body.
Metabolism refers to the biochemical reactions and processes producing catabolism and anabolism within the body.
General term for all of the biochemical processes that take place in the body, including two main types of processes: conversion of foods to energy (catabolism), in which complex substances are broken down to simpler ones, in the process often releasing energy for the body’s use, such as breaking down GLUCOSE (a sugar); and building complex sub-stances out of simpler ones (anabolism), usually using energy, as in making proteins out of amino acids. Any activities, such as exercise, fighting infection, or intellectual effort, increase the metabolic rate, which is the amount of calories needed to supply necessary energy. The amount needed when the body is healthy and completely at rest is called the basal metabolic rate (BMR). Abnormalities in or absence of various kinds of enzymes, substances that trigger metabolic activities, can lead to a wide variety of serious medical disorders, called metabolic disorders or inborn errors of metabolism, such as phenylketonuria (PKU). Many vitamins are necessary for the basic metabolic processes to occur, and malnutrition can also cause metabolic problems.
The rate at which the body burns food.
Combined chemical and physical process that takes place in the body, involves the distribution of nutrients, and results in growth, energy production, elimination of wastes, and other body functions. There are two basic phases of metabolism: anabolism, the constructive phase, during which small molecules resulting from the digestive process are built up into complex compounds that form the tissues and organs of the body; and catabolism, the destructive phase, during which larger molecules are broken down into simpler substances with the release of energy.
Entire transformation of energy and chemicals occurring within living cells, consisting of anabolism and catabolism.
The physical and chemical changes in the body that are responsible for maintaining function and nutrition.
The entire range of biochemical processes by which living things transform substances into energy. Metabolism is commonly used to refer to the breakdown of food and its transformation into energy, but it incorporates all chemical and physical changes that take place within the body and enable it to grow and function.
The sum of all the chemical and physical changes that take place within the body and enable its continued growth and functioning. Metabolism involves the breakdown of complex organic constituents of the body with the liberation of energy, which is required for other processes and the building up of complex substances, which form the material of the tissues and organs, from simple ones.
This means tissue change, and includes all the physical and chemical processes by which the living body is maintained as well as those by which the energy is made available for various forms of work. The constructive, chemical and physical processes by which food materials are adapted for the use of the body are collectively known as anabolism. The destructive processes by which energy is produced with the breaking-down of tissues into waste products is known as catabolism. Basal metabolism is the term applied to the energy changes necessary for essential processes such as the beating of the heart, respiration, and maintenance of body warmth. This can be estimated, when a person is placed in a state of complete rest, by measuring the amounts of oxygen and carbon dioxide exchanged during breathing under certain standard conditions.
The sum of all the physical and chemical processes that take place in the body and enable its continued growth and functioning.
Chemical process that takes place in living organisms through which the cells are nourished and carry out their activities.
The total of all chemical changes that take place in a cell or an organism. These changes produce energy and basic materials needed for important life processes.
The chemical process by which the body breaks down food to obtain energy.
All necessary energy and material transformations that occur within living cells to sustain life.
A collective term for all the chemical processes that take place in the body by which energy is produced and new material is assimilated for the repair and replacement of tissues.
Metabolic rate is a metric that quantifies the number of calories expended per minute by our body for various functions. These functions include both autonomous and involuntary operations such as respiration, heartbeat, digestion, and blood circulation, as well as active voluntary movements. The majority of calories utilized, specifically 70 percent, are allocated towards maintaining our fundamental bodily operations.
Within the intricate workings of the human body lies a remarkable phenomenon known as metabolism a complex chemical process that facilitates the utilization of food for vital purposes such as energy generation, building and repairing tissues. This intricate dance of biochemical reactions plays a crucial role in sustaining the body’s functions, ensuring the transformation of nutrients into the necessary components for growth, maintenance, and overall well-being. Metabolism serves as the foundational mechanism that enables our bodies to extract energy from the food we consume, while also contributing to the construction and restoration of essential structures. It is a remarkable symphony of chemical reactions, orchestrating the harmonious interplay between nourishment and physiological processes to sustain life itself.
The entirety of chemical reactions transpiring within the body, encompassing processes such as growth, conversion of nutrients into energy, elimination of waste, and various other physiological functions.
A comprehensive phrase encompassing all the chemical reactions occurring within the body. This concept is categorized into catabolism (where complex compounds are broken down into simpler components) and anabolism (where complex compounds are synthesized from simpler constituents). Generally, catabolism releases energy, while anabolism consumes it. These chemical reactions are governed by proteins known as enzymes.
The energy required to sustain the body’s basic functions at rest is termed the basal metabolic rate (BMR). It is quantified in kilojoules (or kilocalories) per square meter of body surface per hour. The BMR escalates in reaction to stimuli like stress, fear, physical activity, and sickness. It is primarily governed by hormones such as thyroxine, adrenaline (epinephrine), and insulin.
The intricate processes through which the body constructs food into complex tissue components (anabolism) and simultaneously transforms complex substances into simpler ones for the generation of bodily energy (catabolism).