Question

A slice of bread gives a positive iodine test .however, if the slice is thoroughly chewed, the test is negative . Explain giving reasons.

Answer 1

Answer:

Due to the absence of starch in the chewed bread, the iodine test shows a negative result. Long Answer When we chew the bread saliva digest the starch present in it hence it gives negative test.

Explanation:

please mark me a brainliest......

Answer 2

Answer:

Starch makes up the bread that is contained in the packet. Because raw bread contains starch, when iodine reacts with it, it turns blue.

Explanation:

• On the other hand, salivary amylase, an enzyme, works enzymatically during the bread-chewing process to convert the starch in the bread into glucose.
• As we chew the bread, it breaks down the starch that is there. The iodine test comes out negative because there is no starch in the bread that has been chewed.
• The iodine test comes out negative because there is no starch in the bread that has been chewed.
• Long Response Saliva is produced as we chew bread, and because the starch in it is digested, the test results are negative.

#SPJ2