Ribosomes are like chefs; they take the ingredients and put them together in a complex finished product. Ribosomes are organelles within cells responsible for taking the mRNA and constructing complex polypeptides.
A ribosome is a cell organelle that functions as a micro-machine for making proteins. Their process relies on specialized tRNA for translating the mRNA absorbed creating complex polypeptides for cell function.
An analogy of this process would be a chef. The chef receives the ingredients from the staff and is tasked with creating a meal for someone in the restaurant. The chef, using their knowledge like the complex tRNA, takes the mRNA-provided ingredients and creates a dish which is perfect for the customer. The customer can be anything within the cell requiring a specialized polypeptide. Ribosomes can be found within the cytosol or bound to the endoplasmic reticulum.