Number Game
There are 20 chromatids in a cell, so there are this many centromeres.
20
Chromosomes are made up of 2 polymer molecules
DNA and Proteins
If a cell went through mitosis without going through cytokinesis what would result?
A single cell with two identical nuclei
This is where the microtubules of the spindle fibers originate.
Centrosomes/centrioles
What is the first phase of the cell cycle, the first cell cycle checkpoint?
G1 Phase
Compared to Prokaryotes, Eukaryotes genetic material could be considered this?
More DNA Molecules and a larger amount
More Complex
What is the cleavage furrow?
Movement of the chromosomes during anaphase would be most affected by a drug that prevents this.
A drug that stops the shortening of microtubules/the spindles
Motor proteins require this to function in the movement of chromosomes toward the poles of the mitotic spindle
ATP/energy
The protein synthesized at specific times during the cell cycle that associates with a kinase to form a catalytically active complex that controls the cell cycle.
Cyclin
When there are 20 centromeres in a cell at anaphase, there will be this many chromosomes in each daughter cell.
10
Cancer cells can proliferate without bound, what disability allows them to abuse this characteristic?
The inability to undergo cell-death, apoptosis
The beginning of anaphase starts with what event?
The cleaving of the centromeres and the pulling apart of the sister chromatids
Cells from advanced malignant tumors often have very abnormal chromosomes as well as an abnormal number of chromosomes because of this.
Cell cycle checkpoints are not in place
Regulatory proteins are damaged or not present
Errors occur within the cell cycle
What is the three dimensional Shape of DNA and what is the name of the backbone bond?
Double Helix and phosphodiester bond between the phosphates and sugar groups of two nucleotides
A chemotherapeutic drug is useful for treating cancer cells, because it does this.
it interferes with rapidly dividing cells
What is cyclin?
The regulatory protein that activates certain parts of the cell cycle
A cell is in late anaphase of mitosis, which will allow this to be seen.
An empty/clear area in the center of the cell
Chromatids seperated on opposite ends of the cell
When they stop dividing, they do so at random points in the cell cycle; they are not subject to cell cycle controls; and they do not exhibit density-dependent inhibition when growing in culture.
Cancer cells
Why doesn't the DNA stay in chromosomal form throughout all of the cell cycle?
The DNA needs to be less condensed at points in order to be used and replicated
A particular cell has half as much DNA as some other cells in a mitotically active tissue. The cell in question is most likely in this phase.
Through a microscope, you can see a cell plate beginning to develop across the middle of a cell and nuclei forming on either side of the cell plate. This cell is most likely going through this.
Going through Cytokinesis and the end of Telophase
Why is it important to have cell cycle checkpoints?
Certain processes must occur in order for mitosis to efficiently and accurately happen.
It leads to less mistakes in the cell cycle
When does the replication of DNA occur?
External Inhibition of the cell cycle
AKA density-dependent inhibition
What is the word that describes the relationship between the different base pairings and what enzyme reads those base pairings to apply new nucleotides to a growing DNA strand
Complementary and DNA Polymerase