The best analogy for the nucleolus in eukaryotic cells is a factory that makes tools that are used to build other resources. The primary function of the nucleolus is to combine and construct ribosomes. The primary function of ribosomes is to build proteins necessary for the cell.Know More
In this analogy, one should consider that a civilization does not want hammers, saws and wrenches. Instead, human societies require finished goods such as houses and cars. Similarly, cells do not desire ribosomes; they desire proteins, which the ribosomes produce. In the tool factory analogy, a single tool may be used to build many different types of goods. Similarly, the cell’s nucleolus produces ribosomes, which are similar in structure but capable of producing an extremely wide variety of proteins.
Ribosomes are extremely numerous in an organism’s cells, and the nucleolus produces a large number of them to meet the protein needs of the cell. While many of the cell’s ribosomes are situated on the endoplasmic reticulum, many are also free to float through the cell’s cytoplasm. Occasionally, ribosomes clump together with other ribosomes. Some animals have up to 10 million ribosomes in their growing, functioning cells. Each time the cell divides, the nucleolus must produce double this number.Learn more about Cells
Prokaryotic cells and eukaryotic cells have multiple features in common, including the use of DNA to code for proteins, RNA for translation into proteins and ribosomes to read the RNA. Both types also share such basic cell features as cell membranes and molecules, such as proteins, lipids and carbohydrates. Many prokaryotes and eukaryotes also have cell walls, but the constituents of the walls differ between them.Full Answer >
An important fact about animal cells is that they are eukaryotic cells. Although plant and animal cells are both eukaryotic, animal cells have different organelles and are smaller than plant cells. An organism can be composed of up to trillions of animal cells, with hundreds of different types and functions.Full Answer >
Cellular respiration occurs in the cytoplasm of prokaryotic cells and the mitochondria of eukaryotic cells. The process can be aerobic or anaerobic, and is used as a means of energy production for the cell.Full Answer >
Translation of the messenger RNA (mRNA) occurs in the cytoplasm of eukaryotic cells. The mRNA is synthesized inside the nucleus and is then transported to the cytoplasm where the pool of amino acids is present to start assembling the polypeptide chain.Full Answer >