Tests were performed on samples from a mixture of biological molecules.
When iodine in potassium iodide solution was added to a sample, the mixture turned black.
When the biuret test was carried out on another sample, the mixture turned purple.
Which biological molecules were in the mixture?
amylase and starch
2 )
cellulose and starch
3 )
phospholipid and cellulose
4 )
starch and phospholipid
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