Why does the inside of an apple turn brown?

Why does the inside of an apple turn brown?

When an apple is cut (or bruised), oxygen is introduced into the injured plant tissue. When oxygen is present in cells, polyphenol oxidase (PPO) enzymes in the chloroplasts rapidly oxidize phenolic compounds naturally present in the apple tissues to o-quinones, colorless precursors to brown-colored secondary products.

How many shots are in a fifth of alcohol?

A standard American shot is 1.5 oz. A fifth of jack contains 25.6 oz. This means there are 17.07 shots in a standard fifth of Jack Daniels.

What kind of alcohol is safe to drink?

Ethanol is the only alcohol that is safe to drink till today. To the layman, the term: ‘alcohol’ is widely used rather than the chemist term ethyl alcohol or ethanol.

What is the only man-made structure visible from space.

Spanning 21,196 km in length, the Great Wall of China is the only man-made structure visible from space.

What do ants and humans have in common?

Ants closely resemble human manners:  When they wake, they stretch & appear to yawn in a human manner before taking up the tasks of the day.

Which is the highest mountain peak in the world?

Mount Everest is called the world’s highest mountain because it has the highest elevation above sea level. We could also say that it has the “highest altitude”. The peak of Mount Everest is 8,850 meters (29,035 feet) above sea level.

Do male seahorses get pregnant?

In sea horses, the males become pregnant. Their mating involves the female inserting her oviduct into the male’s brooding pouch. She does this several times for short intervals to avoid exhaustion. In between the female rests while the male contorts himself to try to get the eggs in place in his brood pouch.

Are there kangaroos in New Zealand?

There are no wild kangaroos, but there are wild, non-native wallabies in a few places in New Zealand, Kawau Island is the best known but they also are found in the central North Islands around Lake Tarawera and near Oamaru in the South Island.