thin compartments of the endoplasmic reticulum or the compacted chromatin within the nucleus. An electron micrograph therefore provides an excellent blueprint of a cell's inner structures.

How is all of that DNA packaged so tightly into chromosomes and squeezed into a tiny nucleus? Long, slender DNA molecules wind around proteins and fold in complex ways to form chromosomes.

Animal and plant cells differ and they have similarities. Nucleus, cell membrane, cytoplasm and mitochondria are four cell components that are found in both animal and plant cells. All life on ...