Q: The oldest mother to date to conceive, was 71 years, and the youngest mother, 5 years old. According to statistics from the Human Fertilisation and Embryology Authority, in the UK more than 20 babies are born to women over age 50 per year through in-vitro fertilization with the use of donor oocytes (eggs).
Can we conclude that can you get pregnant at 59 years old?
OPTIONS:
- no
- yes
A: yes
Countercurrent exchange is a mechanism occurring in nature and mimicked in industry and engineering, in which there is a crossover of some property, usually heat or some component, between two flowing bodies flowing in opposite directions to each other. The flowing bodies can be liquids, gases, or even solid powders, or any combination of those. For example, in a distillation column, the vapors bubble up through the downward flowing liquid while exchanging both heat and mass.
in a countercurrent exchange system the fluids in two tubes flow in opposite directions?
OPTIONS:
- no
- yes
+++++
Answer: yes
Although airsoft guns in the United States are generally sold with a 0.24in. or longer orange tip on the barrel in order to distinguish them from real firearms, this is not required by federal law. Manufacturers and importers may cite Part 272 of Title 15 of the Code of Federal Regulations on foreign commerce and trade (15 CFR 272), which stipulates that ''no person shall manufacture, enter into commerce, ship, transport, or receive any toy, look-alike, or imitation firearm'' without approved markings; these may include an orange tip, orange barrel plug, brightly colored exterior of the whole toy, or transparent construction. However these restrictions do not apply to ''traditional B-B, paint-ball, or pellet-firing air guns that expel a projectile through the force of compressed air, compressed gas, or mechanical spring action, or any combination thereof.'' This language exempts airsoft guns from these requirements, placing them in the same category as bb-guns, pellet, air, and paintball, none of which are conventionally sold or used with an orange tip, and many of which bear as much resemblance to real firearms as airsoft guns do.

OPTIONS:
- no
- yes

are bb guns required to have an orange tip?

A: no
Problem: Text: In the United States, the result is a mistrial, and the case may be retried (United States v. Perez, 1824). Some jurisdictions permit the court to give the jury a so-called Allen charge, inviting the dissenting jurors to re-examine their opinions, as a last-ditch effort to prevent the jury from hanging. The Federal Rules of Criminal Procedure state, ''The verdict must be unanimous... If there are multiple defendants, the jury may return a verdict at any time during its deliberations as to any defendant about whom it has agreed... If the jury cannot agree on all counts as to any defendant, the jury may return a verdict on those counts on which it has agreed... If the jury cannot agree on a verdict on one or more counts, the court may declare a mistrial on those counts. A hung jury does not imply either the defendant's guilt or innocence. The government may retry any defendant on any count on which the jury could not agree.''

Question: does a jury all have to agree on a verdict?

OPTIONS:
- no
- yes
A: yes
IN: Is it true that is citric acid a product of the citric acid cycle?

The name of this metabolic pathway is derived from the citric acid (a type of tricarboxylic acid, often called citrate, as the ionized form predominates at biological pH) that is consumed and then regenerated by this sequence of reactions to complete the cycle. The cycle consumes acetate (in the form of acetyl-CoA) and water, reduces NAD to NADH, and produces carbon dioxide as a waste byproduct. The NADH generated by the citric acid cycle is fed into the oxidative phosphorylation (electron transport) pathway. The net result of these two closely linked pathways is the oxidation of nutrients to produce usable chemical energy in the form of ATP.

OPTIONS:
- no
- yes

OUT: no
A Durham University academic, Vikki Boliver, published a report in 2015 claiming that the prestigious position of the Russell Group was not based on evidence, but rather successful marketing. Only the universities of Oxford and Cambridge were significantly more elite than the majority of ''old'' universities when a grouping analysis was performed using data on academic selectivity, research activity, teaching quality, socio-economic exclusivity and economic resources. The other 22 members of the Russell Group sit in a second tier of universities along with 18 other ''old'' universities (University of Aberdeen, University of Bath*, University of Keele, University of Dundee, University of East Anglia*, Goldsmiths*, Heriot-Watt University, University of Kent, Lancaster University*, University of Leicester*, Loughborough University*, University of Reading*, Royal Holloway*, University of St Andrews*, SOAS*, University of Strathclyde, University of Surrey* and University of Sussex*), mostly comprising former members of the defunct 1994 Group (shown by asterisks). Another 13 ''old'' universities and 52 ''new'' universities made up a third tier, with a fourth tier of 19 ''new'' universities. Within each tier, the differences between the institutions were less significant than the differences between the tiers. This reflected an earlier result from 2010 that, when the ''Golden Triangle'' universities (defined in the study as Oxford, Cambridge, Imperial, LSE, and UCL) were omitted, the remaining (then) members of the Russell Group were outperformed by the (then) members of the 1994 Group.

OPTIONS:
- no
- yes

is the university of bath a russell group?

A:
no