All cells have a cell membrane. All cells have a cell wall. Ribosomes are the sites of protein synthesis in cells. Storage areas within a cell are know as lysosomes. Chromosomal DNA is duplicated and divided into two identical sets during mitosis.
Mitosis occurs only in gametes.
Cellular respiration releases chemical energy for cellular use. The nucleus is the structure inside a cell that directs cell activities. Color-producing chemicals in cells are known as pigments. Most cells spend the vast majority of their life in telophase. Mitosis is the process that reduces the chromosome number in half.