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san4es73 [151]
3 years ago
5

While testing for biological macromolecules in an unknown, you find that it reacts strongly with iodine and the solution immedia

tely turns a very dark black. The macromolecule at hand must be:_________.
Biology
1 answer:
True [87]3 years ago
6 0

The macromolecule must be starch.

Explanation:

Starch is a polymer of Glucose joined by glycosydic bond.

Starch is the main energy storage substance in green plants.

Starches react with iodine and give a bluish black or black color and thus iodine test is considered as a confirmatory test for starches.

In this experiment ,the solution turns very dark black on addition of iodine so we can be sure that the solution contained starch.

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