The plasma membrane allows for materials to enter the cell into the cyptoplasma where metabolic reactions necessary for life are carried out. The nuclear area is composed of DNA where genetic information is contained. Also have small circular DNA molecules called plasmids. Ribosomes are sites of protein synthesis. Endospores - Specialized resting cells formed in response to adverse conditions.
Diameter can vary and can be terminally, subterminally, or centrally located.
Nucleus bounded by a membrane. DNA of chromosomes consistently associated with proteins called histones and nonhistones. Possess mitotic apparatus, mitochrondia, endoplasmic reticulum, and sometimes chloroplasts. B. Structures External to Cell. Flagella and Cilia - Both used for motility.