(n.) A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity.
Example Sentences:
(1) Several suppressors (suhD) that can specifically suppress the temperature-sensitive opal rpoH11 mutation of Escherichia coli K-12 have been isolated and characterized.
(2) Oligonucleotide-directed mutagenesis was used to generate amber, ochre and opal suppressors from cloned Arabidopsis and Nicotiana tRNA(Tyr) genes.
(3) The presence of 5' homologies flanking only the transcribed genes and not the pseudogenes suggests that these regions may be regulatory control elements specifically involved in the expression of the eukaryotic opal suppressor gene.
(4) The nonsense mutants of S. pombe have been classified according to their suppressibility by defined opal and ochre suppressors into a class of efficiently suppressed opal and a class of inefficiency suppressed ochre mutants.
(5) The opal suppressor form shows moderate suppressor activity when the gene is introduced on this vector, however, the ochre suppressor form exhibits no detectable biological activity regardless of gene copy number.
(6) The rabbit genome encodes an opal suppressor tRNA gene.
(7) Using such an assay, we provide the first direct evidence that an opal suppressor tRNA gene is functional in mammalian cells.
(8) The growth patterns of nonsense mutants of RNA (GA and f2) and DNA (lambda and T4) phages suggested that KO1 carried an amber, but not ochre or opal suppressors.
(9) Opal suppressor tRNA did not accept any selenocysteine and phosphoseryl-tRNA did not change to selenocysteyl-tRNA.
(10) We report here the construction of a detailed genetic and physical map of these genes, the neighboring gene 4 and a portion of gene 10, in which 289 conditional lethal amber, opal, temperature sensitive and cold sensitive mutations are mapped into 44 small (several hundred base pair) intervals of known sequence.
(11) More than half a million people have joined the Open Air Laboratories (Opal) citizen science project, designed to get people outdoors and involved in scientific research, since its launch in 2007.
(12) We studied the above mechanisms using opal suppressor tRNA in mammals.
(13) Two mutations, Cys-318 to an opal termination codon and Cys-319 to Ser-319, were created in vitro and substituted in the chromosome in place of the normal RAS2 allele.
(14) The important role of G73 in tryptophan identity was confirmed using mutants of an opal suppressor derivative of tRNA(Trp).
(15) This study has been undertaken in order to elucidate the mechanisms of incorporation of Se into glutathione peroxidase (GSHPx), in which selenocysteine corresponds to the opal termination codon UGA on the mRNA.
(16) An opal suppressor of tRNA(Gln) (su+2UGA) containing C35 (anticodon UCA) was isolated by genetic selection and mutagenesis.
(17) A proposal of the role of animal opal suppressor phosphoseryl (Ps)-tRNA is that Ps-tRNA plays a role as an intermediate in the metabolic pathway from 3-phosphoglycerate to glycine.
(18) Suppressor [32P]phosphoseryl-tRNA, prepared using bovine seryl-tRNA synthetase and ATP:seryl-tRNA phosphotransferase, was mixed with rabbit reticulocyte lysates containing endogenous hemoglobin mRNA having the termination codon UGA (opal).
(19) OPAL concept (Old People With Active Life styles) recommends an individualized establishment of therapy instead of standard techniques to try the minimal trouble to a good quality of life for the patient.
(20) "It is so well understood, so embedded in the psyche, that people make jokes about Opal Fruits and Jammy Dodgers being one of your five a day.
Petrol
Definition:
(n.) Petroleum.
Example Sentences:
(1) He gets Lyme disease , he dates indie girls and strippers; he lives in disused warehouses and crappy flats with weirded-out flatmates who want to set him on fire and buy the petrol to do so.
(2) Here petrol is practically a free gift,” Arias said.
(3) Tipping petrol on a fire isn’t going to get the heat out of it,” he told ABC radio.
(4) The closest town of any size is Burns, population 2,806, where you should stock up on petrol, food and water before heading south into the wilderness on the 66-mile Steens Mountain Backcountry Byway.
(5) Tesco, the UK’s biggest petrol retailer with 499 outlets and more than 16% market share, cut petrol and diesel by 1p a litre at all of its petrol stations from lunchtime on Thursday.
(6) While demand in the US remains sluggish, Toyota has benefited at home from a revival in demand for its Prius petrol-electric hybrid, Japan's best-selling passenger car for the past five months.
(7) He reduced the standard rate to 8%, but introduced a higher rate of 12.5% for petrol and some luxury goods, doubling the upper rate later that year to 25% before lowering it in 1976.
(8) Shell, along with other oil companies, has been cleared by the Office of Fair Trading of profiteering on the UK petrol forecourt, but the $27bn annual earnings figure underlines the enormous global profits being made "upstream" – bringing oil and gas out of the ground.
(9) That is 3.1% over the year and today's figures show that Britain is coming back ... For the first time in a decade all three main sectors of the economy have grown by at least 3% in the past year," he said in answer to a question about the price of petrol.
(10) The Unite union, which represents petrol tanker drivers, said there was no threat of a strike over the Easter period and it was focused on talks through the conciliation service Acas.
(11) Petrol car registrations rose by 3.4%, while diesel vehicles saw a slight 0.6% decline in registrations.
(12) Supporters of all parties want more action to cut the cost of petrol.
(13) He not only wouldn’t increase tax on petrol, he gave extra help to those extracting fossil fuel.
(14) This tends to push buyers behind the wheel of a diesel, which usually produces less CO2 than an equivalent petrol.
(15) But anyone who dreams that Germany’s warmth provides more than a sticking plaster to Europe’s migration crisis should have seen the scene half a mile south of the petrol station on Sunday.
(16) Customers posting on Twitter reported having their cards refused in shops, petrol stations and restaurants, as well as not being able to see their balances or withdraw cash at the bank's ATMs.
(17) It was the highest level in more than two years, driven higher by clothing and petrol prices, in a sign that the fall in the value of the pound since the Brexit vote is fuelling a rise in the cost of living.
(18) But the task remains to move the country's remaining fossil fuel-dependent sectors to clean technology: Iceland's fishing fleet, cars and buses, which run on oil and petrol, ironically make the country one of the highest per head greenhouse gas emitters in Europe .
(19) Insecurity has led to panic buying of fuel, with long, chaotic queues at petrol stations.
(20) An attempt to contain juvenile petrol abuse at Elcho Island in the Northern Territory of Australia is described.