Answer:
Ethylene gas
Explanation:
The gas is produced in trace amount by plants (virtually every part of the plant is capable of producing ethylene because it is a gas and it diffuses) and has an effect on plants. Ethylene gas is responsible for ripening of fruits, opening up of flowers and senescence and abscission of leaves. Also, when one puts a ripening fruit among unripe fruits, the unripe ones will ripen in a matter of days – because the ripe one produces ethylene gas which has en effect on the others. Commercially, farmers harvest fully developed bu unripe fruits and then expose them to ethylene gas to ripen when they reach the market. This alleviates food spoilage in transit.
The question has incorrect option, however the question can be answered by the general explanation. On the basis of the general explanation the answer is as follows:
Answer:
The correct answer is - Serine has a small side chain that can fit in any relatively polar environment.
Explanation:
Serine is an amino acid that have a small side chain in comparison of other amino acid and can be replaced by another amino acid with very least effect on the structure and function of a particular protein as they can fit in any relatively polar environment.
Serine have hydroxyl group in their side chain. It is polar amino acid that can easily establish itself in any polar condition and cause least changes in protein structure and function.
Thus, the correct answer is - Serine has a small side chain that can fit in any relatively polar environment.