The Cell Cycle Pearson Dtnamic STudy Module

A cell contains 40 chromatids at the beginning of mitosis. How many chromosomes will it contain at the completion of cytokinesis?

20, half the amount

How many chromatids does a human somatic cell contain after interphase and just prior to mitosis?

92, double the amount due to S phase duplication of chromosomes

Which of the following statements correctly describes the difference(s) between mitosis and binary fission?

Binary fission is the replication of a single leaner chromosome and mitosis replicates multiple

How does the process of mitosis differ between most eukaryotes and other eukaryotes such as diatoms and dinoflagellates

The nuclear envelope fragments in most eukaryotes but remains intact in diatoms and dinoflagellates.

what is the difference between a benign tumor and a malignant tumor?

cells of benign tumors do not metastasize while those of malignant tumors do.

The complex of DNA and protein that makes up a eukaryotic chromosome is properly called __________.

chromatin

Observations of cancer cells in culture support the hypothesis that cancer cells ________

do not exhibit density-dependent inhibition

chromatids are

identical copies of each other if they are part of the same chromosome

Which of the following structures is/are part of the mitotic spindle?

kinetochore microtubules, nonkinetichore microtubules, the aster and the centrosome

The spread of cancer cells to other locations in the body is known as __________.

metastasis

Checkpoints in the cell cycle control system __________

regulate the cell cycle through a variety of stop and go signals

what happens to a cell that undergoes mitosis but not cytokinesis?

they have 2 nuclei