Test # 109
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1500 questions in 150 tests. Each test contains 10 questions.
Idiom of the Day
grass is always greener on the other side (of the fence)
a place or situation that is far away or different seems better than one's present situation
My cousin is always changing jobs because she thinks that the grass is always greener on the other side.
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The pigments that give beets their rich colors are called betalains. There are two basic types of betalains: betacyanins and betaxanthins. Betacyanins are pigments are red violet in color. Betanin is the best studied of the betacyanins. Betaxanthins are yellowish in color. In light or dark red, crimson, or purple colored beets, betacyanins are the dominant pigments. In yellow beets, betaxanthins predominate, and particularly the betaxanthin called vulgaxanthin. All betalains come from the same original molecule (betalamic acid). The addition of amino acids or amino acid derivatives to betalamic acid is what determines the specific type of pigment that gets produced.