C10 Section 2: Mitosis
|The ____ _____ is a repeating sequence of cellular growth and division during the life of a cell.||cell cycle|
|The life of a eukaryotic cell cycles through phases of _____, DNA ________, _________ for cell divison, and division of the ______ and ________||growth, replication, preparation, nucleus, cytoplasm|
|The cell cycle is made up of _ phases||5|
|The first 3 phases together are known as ________. The remaining 2 phases are known as ____ _______||interphase, cell division|
|During interphase, the cell is not dividing. It is ________ and preparing to divide.||growing|
|Cells that divide often (ex skin cells) spend ____ time in interphase.||less|
|Cell that rarely divide (ex nerve cells) spend ____ time in interphase||more|
|The G₁ phase is also known as...||first gap phase|
|During the G₁ phase, the cell ______ rapidly as the cell builds more ________||grows, organelles|
|The S phase is also known as the...||synthesis phase|
|During the S phase, a cell's DNA is ______||copied|
|At the end of the S phase, the cell's nucleus has _____ as much DNA as it did in the G₁ phase. (in other words DNA ________)||twice, replicates|
|In the S phase, each ________ now consists of two identical ________ that are attached at the centromere||chromosome, chromatids|
|The G₂ phase is also known as...||second gap phase|
|In the G₂ phase the cell continues to ____ and prepares to ______||grow, divide|
|In the G₂ phase the cell forms special structures (_______) that helps the cell divide.||spindles|
|Hollow protein fibers called __________ are organized in the ________ during G₂ in preparation for division.||microtubules, cytoplasm|
|Each new cell requires a complete set of ________, including a ______||organelles, nucleus|
|The process of dividing the nucleus into two daugther nuclei is called _______||mitosis|
|The process of separating the organelles and the cytoplasm is called __________||cytokinesis|
|Name the four stage of mitosis in order||Prophase, Metaphase, Anaphase, Telophase|
__________ condense and _______ membrane breaks down. Outside the nucleus, the ______ forms.
|Chromosomes, nuclear, spindle|
Each spindle fiber in turn is made up of an individual _________ - a hollow tube of protein.
The __________ helps assemble the spindle and contains the __________. Each centriole consists of ____ bundles & 3 ________ each.
|centrosome, centrioles, 9, microtubules|
The __________ membrane is fully dissolved & ____________ chromosomes line up on ________ plate.
|nuclear, condensed, equatorial|
_________ fibers link the ________ of each chromosome to opposite _________.
|Spindle, chromatids, poles|
__________ line up & spindle fibers __________ by breaking _________, guiding the _______ toward the centrioles. Each pole now has a full set of _________.
|Chromosomes, shorten, microtubules, chormatids, chromosomes|
_________ envolope ________. The spindle ________ as the ________ reaches the poles. Chromosomes _______ becoming _________.
|Nuclear, reforms, dissolves, chromatids, uncoil, chromatin|
The ____ __________ grows into the center of the cell & ________ into 2 daughter cells. Each daughter cell has about ____ of the parents' ________ & __________.
|cell membrane, divides, half, cytoplasm, organelles|
| Cytokinesis (animal)|
The cell is pinched in half by a belt of _______ threads.
| Cytokinesis (plant)|
Since plant cells have ____ _______, cytoplasm is divided in a different way. _______ that hold material line up across the middle of the cell & ______ fuse to form the ____ ________. The ____ _______ separates the plant into 2 new plant cells.
|cell wall, vesicles, vesicles, cell plate, cell plate|