What is the Turner Prize?
The Turner Prize is the most talked about, and some would say prestigious prize in contemporary art, organised by the Tate in London. It is held every year with a short list of four artists.
It is presented annually to a British artist under fifty years old who has "exhibited outstanding work" in the previous year.
It takes its name from the painter J .M.W. Turner. The prize was first awarded in 1984.
The winner gets a cheque for £25,000. Being on the short list comes with a prize of £5000.The Herald: Assemble artists at the opening of Scotland's first Turner Prize exhibition at Tramway, Glasgow. Picture: Martin Shields.
Where is it?
For the first time, the exhibition which accompanies the prize is in Scotland, at Glasgow's Tramway. Given Scottish artists success in the award, some believe its exhibition north of the border is overdue.
The show runs until January 17

When is the prize awarded?
The winner of Turner Prize 2015 will be announced at an awards ceremony at Tramway on Monday, 7 December. We will find out the winner at about 7.30pm.

Aren't Scottish artists always winning it?
Artists from or trained in Scotland have done remarkably well in the prize, as have graduates of the Glasgow School of Art.
Douglas Gordon, from Glasgow, kicked it off Scottish success by winning in 1996.
In 2001, Martin Creed, who was raised in Lenzie, won it for his 'Work No 227: The Lights Going On and Off'. 
Simon Starling, who studied at the Glasgow School of Art, won in 2005.

Read more: Jan Patience's verdict on this year's nominees 

Richard Wright, who studied and lives and works in Glasgow, won in 2009.
Susan Philipsz, from Glasgow, who attended Duncan of Jordanstone College of Art and Design, won in 2010 with the first purely work made from sound.
Martin Boyce, another Scot trained in Glasgow, won in 2011.
Duncan Campbell, another MFA from the Glasgow School of Art who is based in Glasgow, won in 2014.
Several Scottish or Scottish trained or based artists have been shortlisted for the prize, too, including Nathan Coley, David Shrigley, Luke Fowler, Karla Black, Lucy Skaer, Jim Lambie and Christine Borland.The Herald: SCOTLAND'S FIRST TURNER PRIZE EXHIBITION TO OPEN AT TRAMWAY, GLASGOWPicturedThe Military Industrial Complex by Bonnie Chaplin Photograph by Martin Shields Herald & Times Ltd (40332710)

How was Madonna involved?
She presented the prize in 2001. She presented the prize and said: 'Right on, m*therf*ckers', which was not bleeped out by broadcasters of the prize, Channel 4.The Herald: QUEEN OF POP: Madonna
Yoko Ono presented the prize in 2006.

This year Kim Gordon, the musician and writer best known for being the bassist in Sonic Youth, will present the prize.

Isn't it a London thing?
Every other year it is now presented in a different city outside London's Tate Britain. It was in Derry/Londonderry two years ago and in Gateshead in 2011

Why is it controversial?
Sometimes the art in each show leads to comment or controversy. Contemporary art also divides opinion, both amongst critics and in the public.
In 1998 Chris Ofili's work - which won - used elephant dung part of his mixed-media.
The 1999 prize, which was won by Steve McQueen (now a noted film director) featured Tracey Emin's My Bed, an installation featuring a dishevelled bed surrounded by detritus
Two Chinese artists jumped onto the bed and had a pillow fight.The Herald: Artist Tracey Emin during a photocall with her piece My Bed.
Since 2000 the 'Stuckist' art group have demonstrated against the prize, describing it as a "national joke".
Creed's lights turning on and off prompted a lot of comment, as did Hirst's animals in formaldehyde.

Critics of contemporary art - and in years past, specifically the 'YBA' generation of artists - have seen the prize as a symbol of contemporary art's faults and foibles.

Some regard the award itself as slightly old fashioned. Many artists do not like the apparently competative schedule of shortlists, exhibition and winner.

Who is in for the prize this year?
Assemble, Bonnie Camplin, Janice Kerbel and Nicole Wermers are the artists up for the award. 

Who are they?
Assemble are a multi-disciplinary collective working across architecture, design and art. They have been short listed for a series of projects, including working with the residents of Granby Four Streets, in Liverpool.
Bonnie Camplin is an artist, who was born in London in 1970 and lives and works in London. She works with film, drawing, performance, music and writing. She was nominated for her work, The Military Industrial Complex.
Nicole Wermers was born in Germany in 1971 and lives and works in London. She was shortlisted for her sculpture show, Infrastruktur.
Janice Kerbel was born in Canada in 1969 and lives and works in London.
She has been short listed for her operatic work Doug, which was commissioned by the Common Guild gallery of Glasgow. 

Oh, so there could be another 'Glasgow' winner?
Doug was first performed in the Mitchell Library in Glasgow in 2014 and The Common Guild is a leading arts company in the city.

Who decided the short list, and will decide the winner?
Alistair Hudson, director, Middlesbrough Institute of Modern Art, Kyla McDonald, artistic director of Glasgow Sculpture Studios
Joanna Mytkowska, director of Museum Sztuki Nowoczesnej, Jan Verwoert, critic and curator, and chaired by Alex Farquharson, director of Tate Britain.