The purpose of a vortex instrument is to

The vortex created is a similar form of kinetic force to stirring, but minus a component that protrudes into the sample container. A vortex is the preferred choice for a host of microbiology and life science applications with sensitive samples or high throughput operations. A typical stirrer faces several limitations – for instance, it can only mix a single sample container at a time.

Vortex instrument is used to suspend cells that is, it is a simple device used to mix small vials of liquid in laboratories.

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.