Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
20th century developments in plant biochemistry have been driven by modern techniques of organic chemical analysis, such as spectroscopy, chromatography and electrophoresis. With the rise of the related molecular-scale biological approaches of molecular biology, genomics, proteomics and metabolomics, the relationship between the plant genome and most aspects of the biochemistry, physiology, morphology and behaviour of plants can be subjected to detailed experimental analysis. The concept originally stated by Gottlieb Haberlandt in 1902 that all plant cells are totipotent and can be grown in vitro ultimately enabled the use of genetic engineering experimentally to knock out a gene or genes responsible for a specific trait, or to add genes such as GFP that report when a gene of interest is being expressed. These technologies enable the biotechnological use of whole plants or plant cell cultures grown in bioreactors to synthesise pesticides, antibiotics or other pharmaceuticals, as well as the practical application of genetically modified crops designed for traits such as improved yield.
What opened the door to plant genetic engineering?
A: all plant cells are totipotent

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A high-definition remaster of the game, The Legend of Zelda: Twilight Princess HD, is being developed by Tantalus Media for the Wii U. Officially announced during a Nintendo Direct presentation on November 12, 2015, it features enhanced graphics and Amiibo functionality. The game will be released in North America and Europe on March 4, 2016; in Australia on March 5, 2016; and in Japan on March 10, 2016.
On what date is Nintendo Direct scheduled for European release?
A: unanswerable

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The inherent ambiguity of many control characters, combined with their historical usage, created problems when transferring "plain text" files between systems. The best example of this is the newline problem on various operating systems. Teletype machines required that a line of text be terminated with both "Carriage Return" (which moves the printhead to the beginning of the line) and "Line Feed" (which advances the paper one line without moving the printhead). The name "Carriage Return" comes from the fact that on a manual typewriter the carriage holding the paper moved while the position where the typebars struck the ribbon remained stationary. The entire carriage had to be pushed (returned) to the right in order to position the left margin of the paper for the next line.
What side does the carriage have to be pushed to without moving the printhead?
A: unanswerable

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The Constitution does not explicitly indicate the pre-eminence of any particular branch of government. However, James Madison wrote in Federalist 51, regarding the ability of each branch to defend itself from actions by the others, that "it is not possible to give to each department an equal power of self-defense. In republican government, the legislative authority necessarily predominates."
Who wrote that it was possible to give equal power of self defense to each department?
A:
unanswerable