Cells grow until they reach this and then either stop growing or divide.
What is the size limit?
100
Cells communicate using the exchange of these.
What are signaling proteins?
100
The phase after Interphase in the cell cycle is know as this.
What is Mitosis?
100
Each half of the X shaped chromosome is known as this.
What is a sister chromatid?
100
This is generally the shortest phase in mitosis.
What is metaphase?
200
This key factor that limits the size of a cell is this ratio.
What is the ratio of surface are to volume?
200
The amount of time it takes most cells to complete the cell cycle.
What is 12-24 hours?
200
Like interphase this is divided into four stages or PHASES.
What is mitosis?
200
Each pair of sister chromatids is held together by this structure which ensures that each new daughter cell gets an identical copy of the replicated DNA.
What is a centromere?
200
In this third stage of mitosis, the chromatids are pulled apart, the microtubules of the spindle apparatus begin to shorten pulling at the centromere of each sister chromatid, causing the sister chromatids to separate into two identical chromosomes.
What is anaphase?
300
This part of a cell allows nutrients and waste to pass in and out of a cell.
What is the plasma membrane?
300
The G in the first and third stages of interphase stands for this.
What is Gap or Growth?
300
Prophase, Metaphase, Anaphase, and Telophase are these.
What are the four stages of mitosis?
300
These microtubule structures make up the spindle apparatus.
What are the spindle fibers, centrioles, and aster fibers?
300
At the end of this phase, the microtubules, with the help of motor proteins, move the chromosomes toward the poles of the cell.
What is anaphase?
400
This is the phase of the cell cycle when cells grow and carry out normal cell functions.
What is interphase?
400
Prokaryotic cells divide by this method.
What is binary fission?
400
A cell spends most of its time in this stage of mitosis.
What is Prophase?
400
The nuclear envelope seems to disappear at the end of this phase of mitosis.
What is prophase?
400
In this fourth stage of mitosis the chromosomes arrive at the poles of the cell and begin to relax, two new nuclear membranes begin to form and the nucleoli reappear. The spindle apparatus disassembles and some of the microtubules are recycled by the cell to build various parts of the cytoskeleton.
What is telophase?
500
The second stage of interphase involving the synthesis of DNA.
What is the S stage?
500
This is the major difference between Prokaryotic and Eukaryotic cells.
What is the lack of a nucleus in prokaryotic cells?
500
In this phase of mitosis, the cells chromatin tightens, or condenses into chromosomes which are shaped like an X.
What is what is prophase?
500
During this second stage of mitosis the sister chromatids are pulled by motor proteins along the spindle apparatus toward the center of the cell and line up in the middle, or equator, of the cell.
What is metaphase?
500
During the last stage of the cell cycle, in animal cells, this phase is accomplished by using microfilaments to constrict, or pinch, the cytoplasm, whichresults in two cells, each with identical nuclei.