surface area/volume ratio

(redirected from Surface area to volume ratio)
Also found in: Acronyms, Wikipedia.

surface area/volume ratio

the important relationship between the surface area of a biological unit such as a cell or a whole animal, and its overall volume, which affects many aspects of its biochemistry. As the size of the unit increases, its surface area grows relatively more slowly than its volume. For instance, a perfect cube would increase its surface area as the square of the original size, while the volume would increase as the cube of the original size. Thus a cube with sides of 1 cm has a surface area of 6 cm2 and a volume of 1 cm3; trebling the dimensions of the cube produces a surface area of 54 cm2 (a ninefold - 32 - increase) and a volume of 27 cm3 (a 27-fold - 33 - increase). This relationship may explain why, for example, cells are small, with a large SA:vol. ratio giving a relatively large cell-membrane surface for the transport of molecules and to allow heat loss. See BERGMANN'S RULE.
References in periodicals archive ?
With the rack dryer placed by the sea and with strong wind value, drying can be as competitive as in the solar tunnel dryer for small fishes like Omena and Kimarawali with high surface area to volume ratios.
Now the gas escape rate would be expected to be more readily achieved as the open surface area to volume ratio increased lessening the ability of the gas compression element to assist in energy absorption due to reduced air-flow resistance.
The plan form of the tower remains circular because that shape offers the lowest surface area to volume ratio obtainable this side of a sphere, a strategic decision scarcely compromised by locating the main lifts in a semi-detached glass tower.
The ZSK produces efficient shear stress transfer into the materials being processed due to the higher surface area to volume ratio than available with batch mixers and the design of the mixing elements.
Nanoparticles for example take advantage of their dramatically increased surface area to volume ratio.
95 PB) demonstrates the basics of 3-D shapes and volume, solving equations, linear graphs and more as it surveys different computer games and math revolving around them, while Journey Under the Ocean (9780778723158) encourages kids to use math skills to measure the decline of coral reefs using percentages and changes, read gages and calculate the speed of submarines, and understanding more about whales through surface area to volume ratios and Journey Around the Wonders of the World (9780778723219, $27.
In these cases, the CSR % RSF response might be expected to vary as a function of surface area to volume ratios of the sample.
Inclusions have a buoyancy too great to be fully explained by low specific gravity differences and large surface area to volume ratios.
The researchers decided to simulate various morphological changes in the overall construction of the organisms to test whether it would have been possible for them to attain surface area to volume ratios on the same order as modern bacteria that feed by osmosis.
Plateflow models are said to have higher surface area to volume ratios than conventional shell and tube heat exchangers.
Heat sinks are primarily fabricated aluminum extrusions that have high surface area to volume ratios and are engineered to dissipate unwanted heat generated by electronic components.