Cell Cycle

the fourth phase of mitosis in which sister chromatids separate and are pulled to the opposite poles of the cell

spindle fiber that attaches the centrosome to the cell membrane

the process by which prokaryotic cells divide; asexual reproduction

the life of a cell, from its beginning to the time when it divides to produce a new cell

the process by which one cell divides and becomes two new cells

an imaginary line in the center of a cell during mitosis, along which sister chromatids align

a series of checkpoints directed by chemical signals in a cell that regulate cell growth and division

the point on a chromosome that attaches to the spindle fibers during cell division and at which sister chromatids are attached

a structure in the cytoplasm of animal cells that coordinates the formation of microtubules, which allows cell division to proceed during reproduction

one of two identical halves of a replicated chromosome

the indentation in an animal cell along which cytokinesis occurs

a protein that helps bind sister chromatids together at the centromere

regulatory molecule that functions as a gatekeeper, along with Cdks, to move a cell past checkpoints in the cell cycle

regulatory molecule (usually a protein) that functions as a gatekeeper, along with cyclins, to move a cell past checkpoints in the cell cycle

the pinching off of the cytoplasm to form two new cells

the first phase of the cell cycle; when a cell grows

the third phase of the cell cycle; when a cell grows

collectively the G₁, S, and G₂ phases of mitosis; in which a cell grows, replicates its DNA, and grows again

spindle fiber that extends from the centrosome across the cell equator

a group of proteins bound at the centromere to which the spindle fibers attach

spindle fiber that extends from the centrosome to the kinetochore on the centromere

the fourth phase of the cell cycle; when a cell divides

the third phase of mitosis, in which the sister chromatids line up along the cell equator

the process of cell division that results in two cells that are genetic clones of the parent cell

bundle of spindle fibers attached at one end to the centrosome

the place on a prokaryotic chromosome where DNA replication begins

the second phase of mitosis in which the nuclear membrane breaks down and spindle fibers attach to the centromere

the first phase of mitosis in which sister chromatids condense, the mitotic spindle begins to form, and centrosomes segregate to opposite poles

the second phase of the cell cycle when DNA is replicated

a small, leftover piece of the nuclear membrane