ANTHRO 101 Lecture Notes - Lecture 31: S Phase, Cytokinesis, Metaphase
Document Summary
Newly formed cells usually acquire nutrients from their environment, synthesize additional cellular components, and grow larger. Depending on the organism, the type of cell, and nutrients available the cell may divide. Many cells divide only if they receive signals, like growth hormones, to enter another cell cycle. Other cells may differentiate and never divide again. The eukaryotic cell cycle consists of interphase and cell division. The eukaryotic cell cycle is divided into two major phases: interphase and cell division. During interphase, the cell acquires nutrients from its environment, grows, and duplicates its chromosomes. Consists of nuclear division (called mitosis) followed by cytoplasmic division (called cytokinesis). Cytokinesis is the process by which the cytoplasm is divided between the two daughter cells. Hence mitotic cell division produces two genetically identical daughter cells with equal amounts of cytoplasm. It takes place in all types of eukaryotic organisms. It is the mechanism of asexual reproduction in eukaryotes, including unicellular organisms and multicellular organisms.
