Mitosis

G0

Cells that are in a nondividing state are in which phase?

anaphase

Centromeres divide and sister chromatids become full-fledged chromosomes during _____; sister chromatids separate and daughter chromosomes migrate to opposite poles.

prophase

Chromosomes become visible during _____; the chromatin fibers become discreet chromosomes

prophase

Chromosomes first become visible during which phase of mitosis?

telophase

Cytokinesis often, but not always, accompanies _____

two nuclei

Cytokinesis usually, but not always, follows mitosis. If a cell completed mitosis but not cytokinesis, the result would be a cell with

prophase

Events of _____ include the condensation of chromatin and the dispersal of nucleoli

46

A cell containing 92 chromatids at metaphase of mitosis would, at its completion, produce two nuclei each containing how many chromosomes?

chromatid

A replicate chromosome

anaphase

During which substage of mitosis do sister chromatids break apart and start moving to opposite poles of the cell? (the 4th substage)

S

DNA is replicated at this time of the cell cycle

the mitotic phase

During _____ both the contents of the nucleus and the cytoplasm are divided.

interphase

During _____ the cell grows and replicates both its organelles and its chromosomes.

telophase

During ______ both nuclear envelopes and nucleoli re-form.

metaphase

During ______ chromosomes align along the metaphase plate.

2 chromosomes, 4 chromatids

During prophase a homologous pair of chromosomes consists of _____.

metaphase

During which stage of mitosis are chromosomes lined up in the center of the cell?

same amount chromosomes and DNA

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?

16

If a cell has 8 chromosomes at metaphase of mitosis, how many chromosomes will it have during anaphase?

prometaphase

If cells in the process of dividing are subjected to colchicine, a drug that interferes with the functioning of the spindle apparatus, at which stage will mitosis be arrested?

10

If there are 20 chromatids in a cell, how many centromeres are there?

interphase

Nucleoli are present during ____

centromere

Region in which chromatids remain attached to one another until anaphase.

prometaphase

Spindle fibers attach to kinetochores during _____

32

Starting with a fertilized egg (zygote), a series of five cell divisions would produce an early embryo with how many cells?

False; it is the shortest phase

T/F? Mitosis takes place during M phase, which is the longest phase of the cell cycle.

plant cell undergoing cytokinesis

The formation of a cell plate is beginning across the middle of a cell and nuclei are re-forming at opposite ends of the cell. What kind of cell is this?

telophase

The mitotic spindles disintegrate and a nuclear envelope begins to form around each set of chromosomes during _____, the last substage of mitosis.

kinetochore

To which part of the centromere do mitotic spindle fibers attach during prometaphase?

nuclear envelope disintegrates

Which event does not take place before the start of mitosis? (takes place during)

golgi-derived vesicles

Which of the following are primarily responsible for cytokinesis in plant cells?

prophase

Which term describes centrioles beginning to move apart in animal cells?

anaphase

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

sister chromatids

Which term describes two recently replicated DNA strands that are joined together just before cell division?

cytokinesis

____ in animal cells involves the formation of a cleavage furrow

cytokinesis

_____ in plant cells involves the formation of a cell plate