why ethylene can make a fast fruit ripe?

Ethylene is unsaturated hydrocarbon (C2H4) is a gas at room temperature..

Ethylene is a growth hormone that is produced from normal metabolism in plants. Role of ethylene in fruit ripening and leaf loss. Ethylene is also called ethene. Ethylene compounds in plants are found in the gas phase, Ethylene produced by higher plants from the essential amino acid methionine in all plant tissues. Production of ethylene depends on the type of tissue, plant species, and the degree of development of the fruit ripening, ethylene working to solve the chlorophyll in young fruit, so the fruit has only xantofil and carotene. Thus, the color becomes orange or red fruit

 Characteristics of Ethylene
a. Ethylene is a growth hormone that is produced from normal metabolism in plants.
b. colorless and volatile.
c. Ethylene has a fairly simple structure (C2H4) and is produced in higher plants gaseous,
d. ethylene is an organic compound.

This hormone plays a role in fruit ripening phase klimaterik. Klimaterik also be interpreted as a state of "auto-stimulation" in the fruit so that the fruit becomes ripe, accompanied by an increase in the respiratory process. klimaterik is a period of sudden unique to certain fruit which took place during the manufacture of ethylene along with the start of the ripening of fruit, the fruit showed a sudden increase in CO2 during the ripening of the fruit, so the fruit is called klimaterik.
Fruit maturation process includes two processes, namely:
1. Ethylene affects the permeability of the membrane so that the permeability becomes greater
2. Protein content has increased due to ethylene stimulates protein synthesis. Proteins are formed involved in ripening fruit as it increases the enzymes that cause respiratory climacteric