Although there are specialized cells-both in structure and function-within the body, all cells have similarities in their structural organization and metabolic needs (such as maintaining energy levels via conversion of carbohydrate to ATP and using genes to create and maintain proteins).
Method 1 of 2: In a Paper Bag. 1. Gather a brown paper bag, the bananas you wish to ripen and an apple or tomato. By placing the bananas in a brown paper bag with another fruit, you will maximize the amount of ethylene gas released.Ethylene gas is the substance fruit produces as it ripens.ethod 1 of 2: In a Paper Bag. 1. Gather a brown paper bag, the bananas you wish to ripen and an apple or tomato. By placing the bananas in a brown paper bag with another fruit, you will maximize the amount of ethylene gas released.
Bananas produce ethylene gas, a hormone that triggers ripening. Keep them in a paper bag to trap more of this gas near the fruit. 1  Avoid paper bags with a clay or waxy coating, which may absorb the ethylene.  A plastic bag blocks oxygen from reaching the fruit, which can sometimes lower the production of ethylene.