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What kind of chemical change do you think occurs when a banana peel turns brown in the open air?

Answer 1

Enzyme catalysed oxidation and then polymerisation the resulting product.......

Bananas contain the enzyme polyphenol oxidase. One of the actions of this enzyme is to promote oxidation of the amino acid tyrosine (naturally occurring in the banana) into o-quinone. The enzyme then causes rapid polymerisation of the single ringed o-quinone into one of the polycylic compounds known as melanins. These are dark coloured compounds, which is why the peel turns brown.

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Answer 2

Avery Adams

Oxidation is the chemical process that takes place when a banana peel turns brown when left outside.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.