Can any one part of a bicycle carry out the job whole bicycle?

No, no single part of a bicycle can carry out the job of the whole bicycle. A bicycle is a complex machine with many interdependent parts, and each part plays a specific role in making the bicycle function properly. For example, the wheels allow the bicycle to roll, the handlebars allow the rider to steer, and the pedals allow the rider to propel the bicycle forward. If any of these parts were missing or damaged, the bicycle would not be able to function properly.