why does lugols iodine stain nucleus and cell walls?

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why does lugols iodine stain nucleus and cell walls?

biology lab work

2006-10-05 00:30:38 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Biology

2 answers

Iodine reacts with saccharides to produce a blue to violet reaction product. Iodine-reactive substances include starch, chitin, glygogen, cellulose (cell walls), and the saccharide portion of chromatin (nuclei).

2006-10-05 05:43:54 · answer #1 · answered by PaulCyp 7 · 0⤊ 0⤋

Lugol's iodine is used to identify the presence of starch. The solution is yellow-brown, but when it reacts chemically with starch, a blue-black substance called "iodide starch" is produced.

Starch and cellulose is present in the cell walls and the starch in the nucleus.

2006-10-05 12:18:21 · answer #2 · answered by borscht 6 · 0⤊ 0⤋