Where would a greater rate of diffusion occur whithin a cell with a surface area:volume ratio of6:1 or in a ce
819763
Surface area:vol of 6:1.  The greater the surface area the more diffusion there is.
185144
The larger something is, the greater the volume is compared to surfac area.  Volume grows as a cube of the radius, while surface area grows as the square of the radius.  So, if a cell gets twice as large in diameter, the surface area grows by 4-fold, while the volume grows by 8-fold.  This is why small animals are so much more vulnerable to cold, because they have greater relative surface area through which to lose heat, while large animals have the opposite problem-not enough surface area to get rid of the heat generated in the large volume.
894576
Diffusion is simply the natural movement of ions and small molecules, usually from one side of a membrane to another, but also throughout a liquid. They always flow from more concentrated to less concentrated. So the concentration gradient between the cell and its environment determines which direction the molecules/ions move.
888307
In the absense of additional information or context the basis for this question rests in the size of the molecule. The smaller molecule will have a greater rate of diffusion than the larger molecule.  In general size of molecules is directly proportional to their molecular weight. When all molecules are the same molecular weight you will need to consider which ones are smaller based on the attractive forces between them. \n\na)  CO and N2 - N2 has a triple bond (the Ns are held closely to each other therefore small) and is very stable and I would bet that it will diffuse faster than CO since its actual size is smaller and because it is stable it is less likely to react with any medium through which it is diffusing.\nb) No2 and SO2 - this is likely to be based on size with the larger SO2 diffusing more slowly.\n\nHope this helps.
246381
The 1 cm block has the most efficient ratio. Because the 1cm block has the lowest SA-V ratio, the sodium hydroxide diffuses in faster. The larger the block, the higher this ratio is, and the longer it takes to get nutrients into and out of the cell. This is why cells do not just keep getting bigger and bigger instead of dividing by mitosis.
892328
The transport will be proportional to the concentration.  Higher concentration faster extraction.
446417
If you mean cellular respiration, then it would be about 70%.  The majority of the rest is used for neuronal transmission-specifically for maintanence of the ionic gradient.  If you are speaking of merely gross respiration (the movement of air in and out of your lungs) then it would be a very small percentage.
928673
The ratio between the surface area and volume of cells and organisms has an enormous impact on their biology. For example, many aquatic microorganisms have increased surface area to increase their drag in the water. This reduces their rate of sink and allows them to remain near the surface with less energy expenditure.\n\nAn increased surface area to volume ratio also means increased exposure to the environment. The many tentacles of jellyfish and anemones are the result of increased surface area for the acquisition of food. Greater surface area allows more of the surrounding water to be sifted for food.\n\nIndividual organs in animals are often based on the principle of greater surface area. The lung is an organ with numerous internal branchings that increase the surface area through which oxygen is passed into the blood and carbon dioxide is released from the blood. The intestine has a finely wrinkled internal surface, increasing the area through which nutrients are absorbed by the body. This is done to increase the surface area in which diffusion of oxygen and carbon dioxide in the lungs and diffusion of nutrients in villi of the small intestine can occur.\n\nCells can get around having a low surface area to volume ratio by being long and thin (nerve cells) or convoluted (villi)\n\nIncreased surface area can also lead to biological problems. More contact with the environment through the surface of a cell or an organ (relative to its volume) increases loss of water and dissolved substances. High surface area to volume ratios also present problems of temperature control in unfavorable environments.
31595
Diffusion is transfer of ions or any semipermeable substance through semipermeabe membrane,with help of concentration Gradient across the membrane. Osmosis is loss of water and vapours frm tissue or organised structure like stomata
766280
D. formation of micelles\n\nMicelles only form when the concentration of surfactant is greater than the critical micelle concentration (CMC).
780024
Diffusion is the normal migration of molecules from an area of higher concentration to an area of lower concentration until and equal concentration is achieved.  Everything in nature does this.\nExample-open a bottle of perfume then pretty soon the person in the next room can smell it and so on.\nOsmosis is diffusion or the movement of water across a semipermeable membrane( a cell membrane that lets some stuff in and keeps others out.).  It can go in or out of the cell based on the concentration.  Water is a common carrier molecule for other substances.\nThus diffusion and osmosis are the same except osmosis must have a membrane crossed.
687306
Check the Michaelis-Menten equation.It's too long to write it all down for you ;)
971424
turgid pressure, diffusion, na/pa gradient, active/passive transport.
867974
Oxygen transfers via osmosis through cell walls  from regions of high concentration (ie, the haemoglobin) to the tissue cells where there is a lower concentration. At the same time the tissue cells release carbon dioxide which lowers the partial pressure creating a diffusion gradient for the the oxygen to move along.
384772
Difusion is the movement of particles from an area of high concentration to an area of low concentration, until they are apread out evenly.\n\nExamples for diffusion: \nThe alveoli are well adapted for diffusion of gases, \nthey have a large surface area\nthey are moist, so gases can dissolve\nthey have thin walls\nand a good blood supply.\n\nThe small intestine is specialised for absorption. \nIt has: \nA thin lining\na good blood supply\na very large surface area.\n\nOsmosis is the diffusion of water molecules from a dilute solution to a more concentrated solution through a partially permeable membrane.\n\nA partially permeable membrane allows water molecules to pass through, but not solute molecules.\n\nWhen a plant cells are full of water they are turgid.\nThis rigidity or turgour gives the plant support\nCells are able to absorb some substances against a concentration gradient.\n\nActive transport needs energy from respiration. \n\nActive transport....\nNot all sustances pass into cells by diffusion or osmosis. Some substances are absorbed against a concentration gradient. But to do this energy is needed and it comes from respiration. This process is called ACTIVE TRANSPORT.\nExample of active transport are:\nThe uptake of ions by root hair cells from the soil, where they are in very dilute solution;\nthe uptake of sugar molecules into the small intestine;\nthe re-absorbtion of useful ions in the nephrons of the kidneys.
793148
It has nothing to do with surface area/volume ratio of their cells. Surface area/volume ratio is only a factor when you are talking about single cell species. In multi-cell species, such as bears, humans, ants, elephants, trees,...... it is the number of the cells that determine their size: a baby has a smaller size than an adult human because he has fewer cells not because his cells are smaller than an adult.\nIn case of polar bear vs. black bears size, other than the number of the cells, the amount of fat they have reserved in their body is another factor.
739654
The first and most important thing is for the surface area to volume ratio. The smaller the ratio, the more efficient the cell.\n\nAlso, cells are building blocks of something bigger. If we had huge cells, imagine how big we'd have to be in order to hold trillions of them. ;)\n\nThat's about it in the nutshell.