A certain species has 28 chromosomes in each of its newly formed daughter cells. The parent cells during G1 had this many chromosomes.
What is 28
100
This phase concludes nuclear division.
What is telophase
100
When a cell grows this increases to a point that the cell needs to divide in order to remain healthy.
What is surface-to-volume ratio
100
Humans have this number of chromosomes in their body cells.
What is 46
200
Sometimes described as a "full set" of chromosomes.
What is Diploid
200
Chromatid pairs first form during S phase, however this phase marks the last time they are together.
What is metaphase
200
Longest stage of mitosis
What is metaphase
200
This abbreviation describes a class of enzymes that activate proteins which control the cell cycle through phosphorylation.
What are Cdk's
200
Forms during plant cell cytokinesis
What is a cell plate
300
Animal cells have these located in their centrosomes
What are centrioles
300
Certain types of cells, like nerve cells, are said to be "stuck" in this phase.
What is G0
300
During prophase the nucleoli disappears, chromosomes condense, centrosomes move away from each other, and this begins to form.
What is mitotic spindle
300
These can be produced by damaged cells to initiate cell division by binding to nearby receptors of healthy cells. 50 of them are known.
What are growth factors
300
Shortest stage of mitosis
What is anaphase
400
Most cells only divide when they are attached to an external surface, such as the flat surface of a neighboring cell.
What is Anchorage dependence.
400
Here the accuracy of DNA replication is evaluated and signals whether or not to begin mitosis.
What is the G2 Checkpoint
400
Lengthen during anaphase
What are nonkinetochore microtubules
400
Many cells stop dividing when surrounded by a large quantity of other cells.
What is density-dependent inhibition
400
Injured cells release this in efforts to heal a wound.
What is PDGF
500
A cleavage furrow forms in animal cells due to these.
What are microfilaments (actin)
500
This triggers the cell's passage past the G2 checkpoint into mitosis.
What is MPF
500
Monomer of microtubules
What is tubulin
500
All kinetochores must form in metaphase before a protein is activated that aids in the separation of sister chromatids during anaphase. This event can be described as this general "trigger" of cell regulation.
What is an internal factor
500
A chemotherapeutic drug, Taxol, prevents this from happening during mitosis.