The cardiovascular system has to provide oxygenated blood to the body at a rate sufficient to meet energy requirements. The main limiting factor is O2 delivery (closely followed by CO2 removal). Also, metabolic rate is very closely related to oxygen consumption - they are almost proportional, changing only with the respiratory quotient (which is in turn based on the type of fuel being used; e.g. carbohydrate, fat, protein). So, to a very reasonable approximation, oxygen consumption is proportional to metabolic rate. But in equilibrium, oxygen consumption must equal oxygen delivery by the cardiovascular system. As oxygen is usually carried at the same concentration in blood (close to 100% saturated), this means that the cardiac output is proportional to the oxygen delivered to the tissue per unit time, and hence to the metabolic rate.
Quite simply, just like anything else, cells need energy to work. The energy can't be created out of nothing (First Law), and usable energy gets converted to unusable energy, therefore new energy sources must be found (Second Law).
Cellular respiration can be summarized by the equation: glucose (C₆H₁₂O₆) + oxygen (O₂) → carbon dioxide (CO₂) + water (H₂O) + energy (ATP). This process involves the breakdown of glucose in the presence of oxygen to produce energy, carbon dioxide, and water. The equation illustrates the transformation of chemical energy stored in glucose into usable energy (ATP) for cellular activities, highlighting the interconnectedness of energy metabolism in living organisms.
Your question is ambiguous, but I'll try to give you a few answers:1) Measuring food calories is important because these calories relate to human or animal nutrition and health. If you are getting too few your body will not have enough energy to function. If you are getting too many your body will try to store the extra energy by creating fat, which is calorie-rich material. If you get calories in the wrong form for your metabolism, you may have too much energy and not enough other nutritional building blocks to use it; that might result in fat build-up or an upset metabolism.2) Measuring external calories is important because energy is what runs machines. We usually don't measure machine energy in calories. We measure that in joules or kilowatt-hours. It's energy, nonetheless, and counting energy is important for both economic and ecological purposes.
Metabolism refers to all the chemical reactions that occur in the body to sustain life. Enzymes are biological molecules that speed up these chemical reactions by acting as catalysts. Essentially, enzymes help regulate and facilitate the metabolic processes in the body by increasing the rate at which reactions occur.
Ions are formed by losing or gaining electrons to achieve a full outer electron shell, which corresponds to the valence electrons. Valence electrons are the electrons in the outermost energy level of an atom that participate in chemical bonding, determining the atom's reactivity and ability to form ions.
Astronomers and astrologists.
Activation energy is the energy needed to initiate a chemical reaction. In cell metabolism, enzymes lower the activation energy required for reactions to occur, allowing them to proceed at a faster rate. This enables cells to efficiently carry out the necessary biochemical processes to sustain life.
Activation energy is the energy required to initiate a chemical reaction. In cell metabolism, enzymes lower the activation energy needed for reactions to occur, allowing them to proceed at a faster rate. This enables biological processes to efficiently convert molecules into products such as energy or building blocks for the cell.
how do the hippocrates oath relate to anatomy
the lymphatic system, like the cardiovascular system, includes a network of vessels that transport fluids
Viruses do not feed, they have no metabolism.
It depends on the specific occupational title within physiology. I could relate to a medical doctor, or a scientist within the biological sciences, etc. It is a broad field from which many specialties fall.
There is a one to one relationship.
energy
The sun's energy is produced by nuclear ENERGY!!! im in school..lol
The higher the population, the larger the demand for energy
more calories more energy