Problem: Before the advent of the ASA system, the system of Weston film speed ratings was introduced by Edward Faraday Weston (18781971) and his father Dr. Edward Weston (18501936), a British-born electrical engineer, industrialist and founder of the US-based Weston Electrical Instrument Corporation, with the Weston model 617, one of the earliest photo-electric exposure meters, in August 1932. The meter and film rating system were invented by William Nelson Goodwin, Jr., who worked for them and later received a Howard N. Potts Medal for his contributions to engineering.
What system was used previous to the ASA system?
The answer is the following: the system of Weston film speed ratings

Problem: Due to the chemical composition of the pentose residues of the bases, DNA strands have directionality. One end of a DNA polymer contains an exposed hydroxyl group on the deoxyribose; this is known as the 3' end of the molecule. The other end contains an exposed phosphate group; this is the 5' end. The two strands of a double-helix run in opposite directions. Nucleic acid synthesis, including DNA replication and transcription occurs in the 5'3' direction, because new nucleotides are added via a dehydration reaction that uses the exposed 3' hydroxyl as a nucleophile.:27.2
What is known as the 5' end?
The answer is the following: an exposed phosphate group

Problem: Xalwo (halva) is a popular confection eaten during festive occasions, such as Eid celebrations or wedding receptions. It is made from sugar, corn starch, cardamom powder, nutmeg powder and ghee. Peanuts are also sometimes added to enhance texture and flavor. After meals, homes are traditionally perfumed using frankincense (lubaan) or incense (cuunsi), which is prepared inside an incense burner referred to as a dabqaad.
Along with wedding receptions, when is xalwo often consumed?
The answer is the following: Eid celebrations

Problem: The largest theatre in the city is the 2,300 capacity Mayflower Theatre (formerly known as the Gaumont), which, as the largest theatre in Southern England outside London, has hosted West End shows such as Les Miserables, The Rocky Horror Show and Chitty Chitty Bang Bang, as well as regular visits from Welsh National Opera and English National Ballet. There is also the Nuffield Theatre based at the University of Southampton's Highfield campus, which is the city's primary producing theatre. It was awarded The Stage Award for Best Regional Theatre in 2015. It also hosts touring companies and local performing societies (such as Southampton Operatic Society, the Maskers and the University Players).
What famous ballet company has performed at the Mayflower?
The answer is the following:
English National Ballet