Cell Cycle Q3

How do the daughter cells at the end of mitosis and cytokinesis compare with their parent cell when it was in G1 of the cell cycle?

The daughter cells have the same number of chromosomes and the same amount of DNA.

Which phase includes centromeres uncoupling, sister chromatids separating, and the two new chromosomes moving to opposite poles of the cell?

anaphase

Which below is the term for "programmed cell death" in which severely malfunctioning cells digest themselves and die?

apoptosis

What is the cell doing during S phase of interphase?

replicating DNA

What is the cell looking for at the M check-point?

sister chromatids are each attached to a microtubule spindle fiber

If there are 20 sister chromatids in a cell at metaphase of mitosis, how many chromosomes are there in each daughter cell following cytokinesis?

10

If a cell becomes cancerous, develops a tumor, and becomes metastatic it is typically due to the failure of cell cycle control mechanisms. Which of the following is a type of cell cycle control that would have to fail for this to occur.

Density dependence

Cells that are in a semi-permanent non-dividing state are in which phase?

G 0

What is a sister chromatid?

a replicate of a chromosome attached at a centromere

A group of genes (and the enzymes they code for) that regulate the cell cycle by activating or facilitating the progression toward division (mitosis) are together called...

cell cycle genes

A tumor suppressor gene is one that...

codes for an enzyme that stops the cell cycle

Chromosomes first become visible during which phase of mitosis?

prophase

If cells in the process of dividing has a failure at the M check-point, at which stage will mitosis be arrested?

metaphase

Animal cells undergo cytokinesis by way of a cleavage furrow. Plant cells cannot do this and grow a structure called the cell plate instead. Why can't plant cells form a cleavage furrow?

plant cells have cell walls that are too rigid to form a cleavage furrow

Cancer is most simply and accurately defined as a disease of ...?

tissues