Crossword-Solution: CHLOROPHYLLS
We have 2 clues for the answer “CHLOROPHYLLS”
| Clue | Answers |
|---|---|
| GREEN leaves, constituent of | 3 answers |
| CHLOROPLASTS, structural part of | 7 answers |
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Dermatological complaint
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Hint 1 meaning
An inflammatory disease of the skin, characterized by the
presence of redness and itching, an eruption of small vesicles, and the
discharge of a watery exudation, which often dries up, leaving the skin
covered with crusts; -- called also tetter, milk crust, and salt rheum.
Hint 2 anagram
ECEAMZ
Hint 3 another clue
eruption
7 +1
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Sentences with CHLOROPHYLLS (5)
The ingredients of the "ether extract" of animal and vegetable foods and feeding stuffs, which it is customary to group together roughly as fats, include, with the true fats, various other substances, as lecithians, and chlorophylls.
This change from amorphous to crystalline compounds may be understood from the preliminary statement that the chlorophylls are esters of tri-basic acids, in which one acid hydrogen is replaced by the methyl (CH_{3}) group and a second by the phytyl (C_{20}H_{39}, from phytol, or phytyl alcohol, C_{20}H_{39}OH) group.
When treated with ethyl alcohol (C_{2}H_{5}OH) for the purpose of extracting the pigments, the ethyl (C_{2}H_{5}) group replaces the phytyl group, thus yielding a methyl-ethyl ester, and these esters are the crystalline forms of the chlorophylls.
While the chlorophylls are tri-basic acids, only two of the acid COOH groups actually function in ester-formation.
THE CONSTITUTION OF THE CHLOROPHYLLS As has been mentioned, chlorophyll _a_ differs from chlorophyll _b_ by having one more oxygen and two less hydrogen atoms in the molecule, and in having one of its nitrogen atoms in the "lactam" arrangement.