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| Question | Answer |
|---|---|
| cell division | process by which a cell divides into two new daughter cells |
| asexual reproduction | process of reproduction involving a single parent that results in offspring that are genetically identical to the parent |
| sexual production | type of reproduction in which cells from two parents unite to form the first cell of a new organism |
| chromosome | threadlike structure of DNA and proteins that contains genetic information; in eukaryotes, chromosomes are found in the nucleus; in prokaryotes, they are found in cytoplasm |
| chromatin | substance found in eukaryotic chromosomes that consists of DNA tightly coiled around histones |
| cell cycle | series of events in which a cell grows, prepares for division, and divides to form two daughter cells |
| interphase | period of the cell cycle between cell division |
| mitosis | part of eukaryotic cell division during which the cell nucleus divides |
| cytokinesis | division of the cytoplasm to form two seperate daughter cells |
| prophase | first and longest phase of mitosis in which the genetic material inside the nucleus condenses and the chromosomes become visible |
| centromere | region of the chromosomes where the two sisters chromatids attach |
| chromatid | one of two identical " sister " parts of a duplicated chromosomes |
| centriole | structure in an animal cell that helps to organize cell division |
| metaphase | phase of mitosis in which the chromosomes line up across the center of the cell |
| anaphase | phase of mitosis in which the chromosomes separate and move to opposite ends of the cell |
| telophase | phase of mitosis in which the distinct individual chromosomes begin to spread out into a tangle of chromatin |
| cyclin | one of a family of proteins that regulates the cells cycle in eukaryotic cells |
| growth factor | one of a group of external regulatory proteins that stimulate the growth and division of cells |
| apoptois | process of programmed cell death |
| cancer | disorder in which some cells lose the ability to control growth |
| tumor | mass of rapidly dividing cells that can damage surrounding cells |
| embryo | developing stage of a multicellular organism |
| differentiation | process in which cells become specialized in structure and function |
| toipotent | cells that are able to develop into any type of cell found in the body ( including the cells that make up the Extraembryonic membranes and placenta ) |
| blastocyst | stage of early development in mammals that consists of a hollow ball of cells |
| pluripotent | cells that are capable of developing into most, but not all, of the body's cells |
| stem cell | unspecialized cell that can give rise to one or more types of specialized cells |
| multipotent | cell with limited potential to develop into many types of differentiated cells |