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Прочитайте текст и ответьте на вопрос: Where is the source of all vitamin A in Vitamin A is an unsat...: ответ на тест 911574 - Английский язык

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Where is the source of all vitamin A in?
Vitamin A is an unsaturated cyclic alcohol. It is synthesezed by at least three separate processes.
It has been concentrated and isolated from the non-saponiflable to be present in fish oil, both in the free alcohol and in the ester form. The source of all vitamin A is in the carotenoid pigments, the yellow-coloured, compounds occurring in all chlorophyll-containing plants.
In pure form it is a pale yellow oil, soluble in fat solvents, having an ultra-violet absorption spectrum. The ester forms of the vitamin have been found to possess greater stability than the free alcohol.
Варианты ответов
  • It is in an unsaturated cyclic alcohol.
  • It is in the non-saponiflable to be present in fish oil.
  • It is in the carotenoid pigments, the yellow-coloured, compounds occurring in all chlorophyll-containing plants.
  • It is in a pale yellow oil, soluble in fat solvents.
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Вопрос задал(а): Анонимный пользователь, 13 Ноябрь 2020 в 16:10
На вопрос ответил(а): Анастасия Степанова, 13 Ноябрь 2020 в 16:10

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Vitamin A is an unsaturated cyclic alcohol.
The source of all vitamin A is in the carotenoid pigments, the yellow-coloured compounds occurring in all chlorophyll-containing plants.
In pure form it is a pale yellow oil, soluble in fat solvents, having an ultra-violet absorption spectrum. The ester forms of the vitamin have been found to possess greater stability than the free alcohol.
Прочитайте текст и ответьте на вопрос:
Where is the source of all vitamin A in?
It is in an unsaturated cyclic alcohol.
It is in a pale yellow oil, soluble in fat solvents.
It is in the non-saponifiable to be present in fish oil.
It is in the carotenoid pigments, the yellow-coloured, compounds occurring in all chlorophyll-containing plants.

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Vitamin A is an unsaturated cyclic alcohol.
The source of all vitamin A is in the carotenoid pigments, the yellow-coloured compounds occurring in all chlorophyll-containing plants.
In pure form it is a pale yellow oil, soluble in fat solvents, having an ultra-violet absorption spectrum. The ester forms of the vitamin have been found to possess greater stability than the free alcohol.
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