what is the relationship between active transport and homeostasis?
829162
Active transport works to conserve homeostasis.  When cells are doing something they typically receive a signal causing channels to open, which in turn lets in a flood of molecules down their chemical gradients....if you have more of something on one side of the membrane it'll rush to the other side very quickly.  However, the problem comes as to how to regenerate that gradient so that the next time you have a signal you can get the rush of molecules back.  Active transport uses ATP and other molecules as energy to drive certain atoms and molecules across the membrane, thus restoring the gradient.\n\nEx:  In order for the heart to contract you need a rush of calcium and other atoms into heart cells.  when it is time there is a signal that opens calcium channels in the membrane.  Naturally there is a very high concentration of calcium outside the cell.  When the signal arrives, the channels open, and calcium rushes into the cell where there is no calcium.  Then the channels close, but how do you get the calcium back out of the cell(it won't just flow naturally)?  So you need active transport in the form of ATP pumps and co-transporters to work to push calcium out of the cell.\n\nIt's called active transport because it requires energy in the form of atoms or ATP. Homeostasis is the cell's resting state...aka when there's a high amount of calcium outside the cell, pre-signaling.
233146
These terms refer to transport of chemicals across a cell membrane, in this case through the membrane of an egg, just under the shell (as suggested in a school biology experiment). From the ref. below, "Passive transport is the movement of substances across the membrane without any input of energy by the cell. Active transport is the movement of materials where a cell is required to expend energy."
786061
Homeostasis.\n\nFor more specifics about plants look at the bottom of the second source.
327510
Excretory systems regulate the chemical composition of body fluids.\n\nhttp://www.fi.edu/biosci/systems/excretion.html
1151854
Active transport is the movement of a molecule across a membrane or another barrier that is driven by energy other than stored in the concentration gradient or the electrochemical gradient of the transported molecule. This type of transport requires usually the expenditure of ATP and the help of specific transport proteins. In this way can even large molecules can be channelled through the membrane. For the understanding of the details of the mechanism are both the structure of the involved transport molecules and the question how the energy for the transport is supplied and how it is used important. We will meet the electrical membrane gradient again in this context. \n\nActive transport can only occur at intact, closed membranes. Such membranes can envelop very different compartments, like the whole cell, vesicles, the vacuole, the mitochondrial matrix, the inner thylacoid space of the chloroplasts, etc. As a result of active transport can ions and metabolites be concentrated within the respective compartment or the cell and the steady state of the metabolism can be kept constant despite of large fluctuations in the external medium's composition. Ions, especially potassium, calcium, magnesium and phosphate have an important part in the regulation of the metabolism. \n\nThe transport direction is thermodynamically determined by coupling the transport with a gradient, usually an electron gradient. The direction can be reversed if the appropriate substrate concentrations are chosen.
823132
active transport is usually classified as endocytosis, exocytosis (pinocytosis or phagocytosis) processes that require cell use of ATP energy from cell respiration to allow molecules to move from LOW concentration to HIGH concentration. It often involves the use of membrane proteins and cell pumps of various kinds to allow substanaces to pass either into or out of the cell.\n\nCellular transport is often described as the movement of substances just within the cytosol or the cytoplasm, not across the cell membrane. ie as substances move from the Golgi to the edge of the cell mbn.
1052995
The main system of transporting nutrients to the body's cells is through the blood stream. But once a nutrient arrives at a needy cell, it is still inside a blood vessel while the cell lies outside. The lack of nutrients inside the cell, and between the cell and the blood vessel, creates a concentration gradient between the blood vessel and the cell. Due to the lower concentration in the cell, the nutrient diffuses through the blood vessel wall and into the cell.
228026
Maintaining homeostasis; as it refers to keeping a balance of all the nutrients and waste materials in the body
948225
to maintain the concentration level of the cell
563473
Homeostasis \nHomeostasis is the physiological process by which the internal systems of the body (e.g. blood pressure, body temperature, acid-base balance) are maintained at equilibrium despite variations in the external conditions. \nThe body can maintain the fluid levels using the kidneys, these organs filter out harmful chemicals and excess liquid into the bladder from which the urine is then expelled.  Body temperature is regulated somewhat by the skin, example, if you are hot you begin to sweat and this helps to cool the body, if you are cold you shiver this helps to raise, the body temperature.
877318
There are many ways in which these two systems work together to maintain homeostasis but let's keep it simple if we can...\nBy excretory system I imagine you are referring to the kidneys, ureter, bladder, etc. This system receives about a quarter of the blood volume from each stroke of the heart, and filters out the impurities and excess water from the bloodstream. By doing this the kidneys (along with the lungs) help to maintain the pH of the blood (maintain the acid to base balance.) If the pH varies too much then the person's life could be in danger. By removing excess minerals from the body the kidneys also prevent potential life-threatening problems from occurring. For example, if you have too much potassium in your body, even though it is necessary to have some, your heart could stop. \nBy removing excess water from the blood, along with producing certain hormones, the kidneys also help blood pressure from getting too high or low. A healthy heart and blood vessels also contribute to maintaining blood pressure by constricting and expanding the vessels, and by changing the rate of your pulse. Hope this helps some...
382752
Homeostasis is the property of an open system, especially living organisms, to regulate its internal environment to maintain a stable, constant condition, by means of multiple dynamic equilibrium adjustments, controlled by interrelated regulation mechanisms.  The main examples of homeostasis in mammals are as follows:\n\n- The regulation of the amounts of water and minerals in the body. This is known as osmoregulation. This happens in the kidneys.\n- The removal of metabolic waste. This is known as excretion. This is done by the excretory organs such as the kidneys and lungs.\n- The regulation of body temperature. This is mainly done by the skin.\n- The regulation of blood glucose level. This is mainly done by the liver and the insulin secreted by the pancreas in the body.\n\nIt is important to note that while organisms exhibit equilibrium, their physiological state is not necessarily static. Many organisms exhibit endogenous fluctuations in the form of circadian (period 20 to 28 hours), ultradian (period <20 hours) and infradian (period > 28 hours) rhythms. Thus even in homeostasis, body temperature, blood pressure, heart rate and most metabolic indicators are not always at a constant level, but vary predictably over time.
703068
Hey we were learning about that in school this week. anyway Active transport is the "movement of materials through a cell membrane using energy"\nand Diffusion is "the process by which molecules tend to move from a area of higher concentration to an area of lower concentration\n\nactually diffusion is a form of active transport so really that is the similarity because its like parts of a whole((sorry if this was confusing))\n\n~*~*~*~*~*~*~*~~*~*~*~*~**~*~*~*~*~*~*~\nMy name is Brittany ((LoL i knrew it would be confusing))\n~*~*~*~*~**~*~*~*~*~**~*~*~*~*~**~*~*~\nim in 7th too. ((if its not too much can you e~mail me?))\n~*~*~*~*~**~*~*~*~*~*\nalright
188179
pons regulate homeostasis in the body. It sends receptors to the entire body. If your temperature goes up, receptors alert the pons and the medulla regulates the temperatre again
166751
The binding of insulin to cell surface receptors initiates an increase in Glucose Transporter (GLUT) Proteins.\nGLUT Proteins are transmembrane molecules.\nGlucose moves into the cell - facilitated diffusion.\n\nLook here:
1089975
homeostasis is the underlying theme of all of nature and IMPLIES interdependence.  Most current anatomy-physiology textbooks FINALLY list how each system affects all the other systems of the body.  We use Tortora and Dickerson and the last page of each chapter itemizes all this.  Very helpful to teach the interconnectedness of the systems, yes, but also all of life-the cosmos.  It's all connected and interdependent from micro sub-atomic particles to macro galaxies and cosmos.
606401
The circulatory system (sometimes cardiovascular system) is an organ system that moves substances to and from cells; it can also help stabilize body temperature and pH (part of homeostasis). \nSimply - it is primarily the system of blood transport that moves around nutrients and oxygen to all parts of your body...