The following image displays one of the four nucleotides found DNA. nucleotides have three phosphate groups, a five-carbon sugar, and a nitrogen-containing base. Nucleotides differ in the chemical construction of their nitrogen-containing bases. The nucleotide displayed in this image is

Plants do not have skeletons, but their shape is defined by the part of the cell called the cell wall. The cell wall is featured only in plant cells and is made of cellulose. Chloroplast: Chloroplast is another big difference between plant and human cells.