Сурет:Chirality with hands.jpg
Chirality_with_hands.jpg (250 × 170 пиксел, файл өлшемі: 15 КБ, MIME түрі: image/jpeg)
|
Бұл файл Wikimedia Commons? жобасынан, сондықтан басқа жобаларда да қолдануы мүмкін. Commons ашық лицензиялы медиа файл қоры. Сіз жобаға көмектесе аласыз. |
|
Ортаққордан қарау |
|
File:Chirality with hands.svg is a vector version of this file. It should be used in place of this JPG file when not inferior.
File:Chirality with hands.jpg → File:Chirality with hands.svg
For more information, see Help:SVG. |
 |
 | This image was uploaded in the JPEG format even though it consists of non-photographic data. This information could be stored more efficiently or accurately in the PNG or SVG format. If possible, please upload a PNG or SVG version of this image without compression artifacts, derived from a non-JPEG source (or with existing artifacts removed). After doing so, please tag the JPEG version with {{Superseded|NewImage.ext}} and remove this tag. This tag should not be applied to photographs or scans. If this image is a diagram or other image suitable for vectorisation, please tag this image with {{Convert to SVG}} instead of {{BadJPEG}}. If not suitable for vectorisation, use {{Convert to PNG}}. For more information, see {{BadJPEG}}. |  |
Түйін
| Сипаттамасы |
Amino Acid Chirality chirality with hands from http://www.nai.arc.nasa.gov/ A "chiral" molecule is one that is not superimposable with its mirror image. Like left and right hands that have a thumb, fingers in the same order, but are mirror images and not the same, chiral molecules have the same things attached in the same order, but are mirror images and not the same. Although most amino acids can exist in both left and right handed forms, Life on Earth is made of left handed amino acids, almost exlusively. No one knows why this is the case. However, Drs. John Cronin and Sandra Pizzarello have shown that some of the amino acids that fall to earth from space are more left than right. Thus, the fact that we are made of L amino acids may be because of amino acids from space. Why do amino acids in space favor L? No one really knows, but it is known that radiation can also exist in left and right handed forms. So, there is a theory called the Bonner hypothesis, that proposes that left handed radiation in space (from a rotating neutron star for example) could lead to left handed amino acids in space, which would explain the left handed amino acids in meteorites. This is still speculative but our paper makes it much more plausible. In fact, this observations was one of the main reasons why we persued this research. Although there were theories about how the amino acids could form in space in the ice, no one had shown that it was viable to make amino acids this way, until now. |
| Көзі |
http://web99.arc.nasa.gov/~astrochm/chirality.jpg (original location) |
| Авторы | Unknown author |
Лицензиялау
|
This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
 |
Warnings:
|
Файл тарихы
Файл сол кезде қалай көрінгенін көру үшін күн/уақыт дегенге басыңыз.
| Күн/Уақыт | Нобай | Өлшемдер | Қатысушы | Пікір | |
|---|---|---|---|---|---|
| қазіргі | 19:40, 2008 ж. наурыздың 6 | | 250 × 170 (15 КБ) | Jacopo Werther | {{Information |Description= Amino Acid Chirality chirality with hands from http://www.nai.arc.nasa.gov/ A "chiral" molecule is one that is not superimposable with its mirror image. Like left and right hands that have a thumb, fingers in the same order, b |
Файл қолданылуы
Бұл файлға еш бет сілтемейді.
Глобалды файл қолданылуы
Бұл файл келесі басқа уикилерде қолданылады:
- cs.wikipedia.org жобасында қолданылуы
- de.wikipedia.org жобасында қолданылуы
- fr.wikibooks.org жобасында қолданылуы
- uk.wikipedia.org жобасында қолданылуы
