Question

●) why does a banana peel or a slice of apple turn brown if it's left in the open ?​

Answer 1

Answer:

This is because the tape sealed the banana from the oxygen, which is necessary for the enzymatic browning reaction to happen. When you cut an apple its tissue is damaged, and its cells are broken due to mechanical stress. This again triggers enzymatic browning, which you should have observed on the apple slices.

Explanation:

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Answer 2

If you taped parts of the banana, however, you should have noticed that underneath the tape the banana kept its yellow color. This is because the tape sealed the banana from the oxygen, which is necessary for the enzymatic browning reaction to happen.

When you cut an apple its tissue is damaged, and its cells are broken due to mechanical stress. This again triggers enzymatic browning, which you should have observed on the apple slices.

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