The ____ _____ is a repeating sequence of cellular growth and division during the life of a cell.
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
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.
Cells that divide often (ex skin cells) spend ____ time in interphase.
Cell that rarely divide (ex nerve cells) spend ____ time in interphase
The G₁ phase is also known as...
first gap phase
During the G₁ phase, the cell ______ rapidly as the cell builds more ________
The S phase is also known as the...
During the S phase, a cell's DNA is ______
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 ________)
In the S phase, each ________ now consists of two identical ________ that are attached at the centromere
The G₂ phase is also known as...
second gap phase
In the G₂ phase the cell continues to ____ and prepares to ______
In the G₂ phase the cell forms special structures (_______) that helps the cell divide.
Hollow protein fibers called __________ are organized in the ________ during G₂ in preparation for division.
Each new cell requires a complete set of ________, including a ______
The process of dividing the nucleus into two daugther nuclei is called _______
The process of separating the organelles and the cytoplasm is called __________
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
The cell is pinched in half by a belt of _______ threads.
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