A sliced apple will turn brown when exposed to air because _____.
A) oxygen in the air oxidizes the chemicals present in the apple
B) oxygen in the air reduces the chemicals present in the apple
C) nitrogen in the air oxidizes the chemicals present in the apple
D) nitrogen in the air reduces the chemicals present in the apple
E) hydrogen in the air reduces the chemicals present in the apple

Question

A sliced apple will turn brown when exposed to air because  _____.
A) oxygen in the air oxidizes the chemicals present in the apple
B) oxygen in the air reduces the chemicals present in the apple
C) nitrogen in the air oxidizes the chemicals present in the apple
D) nitrogen in the air reduces the chemicals present in the apple
E) hydrogen in the air reduces the chemicals present in the apple

Quizplus · Accepted Answer

When an apple is sliced, the cells are damaged and oxygen from the air reacts with enzymes and chemicals in the apple. This reaction, called oxidation, leads to a brown coloration known as enzymatic browning.

A Sliced Apple Will Turn Brown When Exposed to Air