- obsolete insoluble fraction
OBSOLETE. That fraction of cells, prepared by disruptive biochemical methods, that is not soluble in water.
- obsolete soluble fraction
OBSOLETE. That fraction of cells, prepared by disruptive biochemical methods, that is soluble in water.
- obsolete membrane fraction
OBSOLETE. That fraction of cells, prepared by disruptive biochemical methods, that includes the plasma and other membranes.
- obsolete integral to membrane of membrane fraction
OBSOLETE. Integral to that fraction of cells, prepared by disruptive biochemical methods, that includes the plasma and other membranes; require detergents, such as Triton X-100, to be released from membranes.
- obsolete peripheral to membrane of membrane fraction
OBSOLETE. Peripheral to that fraction of cells, prepared by disruptive biochemical methods, that includes the plasma and other membranes; can be extracted from membrane fraction with high concentrations of salt or high pH.
- echolocation
Echolocation is the method used by some animals (e.g. bats, dolphins and some whales) to determine the location of something by measuring the time it takes for an echo to return from it. These animals emit sound waves and listen for the echo, calculating the distance to the object from the time lapse between sound emission and the echo returning.