Blood pressure is always given in the form of two numbers, one over the other, like a fraction. The systolic pressure is the upper number, and the diastolic pressure is the lower number. Both of these measurements are important. For example, a personâs BP reading may be 120/80 mmHg.
Chrysoprase, chrysophrase or chrysoprasus is a gemstone variety of chalcedony (a cryptocrystalline form of silica) that contains small quantities of nickel.Its color is normally apple-green, but varies to deep green. The darker varieties of chrysoprase are also referred to as prase.hrysoprase is cryptocrystalline, which means that it is composed of crystals so fine that they cannot be seen as distinct particles under normal magnification.
Phosphoribosyl pyrophosphate (PRPP) is a pentosephosphate. It is formed from ribose 5-phosphate by the enzyme ribose-phosphate diphosphokinase. It plays a role in transferring phospho-ribose groups in several reactions:ncreased levels of PRPP are present in Lesch-Nyhan Syndrome. Decreased levels of hypoxanthine guanine phosphoribosyl transferase (HGPRT) causes this accumulation, as PRPP is a substrate used by HGPRT during purine salvage.