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Clumsy star. Focus Secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

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Focus Description:

Blind a primitive star from fresh bread, as in the figure - about the same size. Offer to throw it with all your might on the floor. She will jump, and nothing will happen to her: the elastic rays will bounce off the floor and straighten up, as if nothing had happened.

Focus Clumsy Star

Focus secret:

An asterisk must certainly be molded from fresh bread; otherwise nothing will come of it.

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Random news from the Archive

Plants can distinguish friend from foe 01.04.2017

The immune system of plants is able to distinguish friends from enemies at the genetic level. This discovery will improve the modification of agricultural plants.

Our immune system protects us from disease and infection by fighting off viruses and other foreign substances. Plants also have a mechanism that fights invaders. It is called post-transcriptional gene silencing and fights against foreign RNA, distinguishing them from non-foreign, and including it does not react to RNA that originated from the plants themselves.

Thus, having understood and decomposed this process into components, scientists at the University of Tokyo have calculated the key enzyme that triggers a protective reaction in the plant. It is called RDR6 and responds to the long chain of adenosine nucleotides found at the end of any RNA. As it turned out, everything turned out to be quite simple. If the injected RNA had this chain on both sides, then the immune system mistook the RNA for a "friend", while where this chain was missing, a violent immune reaction began, triggering the defense mechanism against the "enemy".

Initially, scientists believed that many proteins were involved in the process of distinguishing between different RNAs, but the solution turned out to be much more elegant, which means that the process of genetic modification of plants will now be greatly simplified.

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