Cell Growth and Division

The life cycle of a cell; in eukaryotes, it consists of a cell-growth period in which DNA is synthesized and a cell-division period in which mitosis takes place

In eukaryotic cells, a process of cell division that forms two new nuclei, each of which has the same number of chromosomes

The division of the cytoplasm of a cell; cytokinesis follows the division of the cells nucleus by mitosis or meiosis

Cell structures found in animal cells that help indicate the development of the spindle for mitosis

A network of microtubules which appears during mitosis; it helps guide the chromatids to the end of the cell

In a eukaryotic cell one of the structures in the nucleus that are made up of DNA and protein; in a prokaryotic cell the main ring of DNA any chromosome that is not a sex chromosome

Part of the cell cycle which consists of the period between two mitotic or meiotic divisions during which the cell grows, copies its DNA and synthesizes proteins

The process by which a cell divides into two daughter cells

One of two identical "sister" parts of a duplicated chromosome

Area where the chromatids of the chromosome are attached

First and longest phase of mitosis where chromosomes become visible

Second phase of mitosis where chromosomes line up across the center of the cell

Third phase of mitosis where the centromeres   split, allowing the sister chromatids to separate and become individual chromosomes. This phase ends when chromosomes stop moving

The fourth and final phase of mitosis where the chromosomes begin to disperse into a tangle of dense material.  A nuclear envelope re-forms around each cluster of chromosomes

One of a family of closely related proteins that regulates the cell cycle in eukaryotic cells

A tumor in which the cells begin dividing at an uncontrolled rate and become invasive

Vascular tissue that carries water upward from the roots in every part of a plant

Vascular tissue responsible for the transport of nutrients and the carbohydrates produced by photosynthesis

Tissue that covers the surface or the body and lines internal organs

Layer of tall column-shaped cells just under the upper epidermis of a leaf

Opening in the underside of a leaf that allows carbon dioxide and oxygen to diffuse into and out of the leaf

Specialized cell in the epidermis of plants that controls the opening and closing of stomata by responding to changes in water pressure