Ch. 9 Chapter 9: The Cell Cycle Dynamic Study Module
Assume that you are dealing with a species in which the number of chromosomes in each somatic cell is 14. How many sister chromatids are present in the early telophase of mitosis?
0
A cell biologist carefully measured the quantity of DNA in grasshopper cells growing in cell culture. Cells examined during the G2 phase of the cell cycle each contained 200 units of DNA. What would be the amount of DNA at G1 of the cell cycle in a daughter cell of one of these cells?
100 units
When not engaged in the processes leading to cell division, how many chromosomes from your mother are present in the nucleus of each of your somatic cells?
23
If a human somatic cell is in metaphase, it has __________ chromatids.
92
Down syndrome is characterized by cells having three copies of chromosome 21. As a somatic cell in an individual with Down syndrome prepares to enter mitosis, how many chromatids would be present in the cell's nucleus?
94
What is the difference between a benign tumor and a malignant tumor?
Cells of benign tumors do not metastasize; those of malignant tumors do.
The cleavage furrow forms during which stage of mitosis and cell division of an animal cell?
Cytokinesis
Which of the following does not occur during mitosis?
Duplication of chromosomes
Which of the following represents a mismatch or incorrect description?
Metaphase: the nuclear envelope disappears
Which of the following processes does not occur in dividing bacteria?
Mitosis
You would be unlikely to see which of the following human cells dividing?
Nerve cell
A cell entering mitosis with 32 chromosomes will produce daughter cells with __________.
None of the listed responses is correct.
In a human skin cell that is going through the cell cycle, when do the centrosomes separate?
Prophase
The person credited with the axiom, "Every cell from a cell" is __________.
Rudolf Virchow
The function of mitosis and cytokinesis is to produce daughter cells that __________.
are genetically identical to the parent cell
A biochemist measured the amount of DNA in cells growing in the laboratory and found that the quantity of DNA in the cells doubled __________.
between the G1 and G2 phases Between these two phases of the cell cycle, the DNA is replicated during the S phase.
The complex of DNA and protein that makes up a eukaryotic chromosome is properly called __________.
chromatin
During interphase, the genetic material of a typical eukaryotic cell is __________.
dispersed in the nucleus as long strands of chromatin
Cytokinesis refers to __________.
division of the cytoplasm
Observations of cancer cells in culture support the hypothesis that cancer cells __________.
do not exhibit density-dependent inhibition
Tissue culture experiments with PDGF demonstrate that without this substance __________.
fibroblasts fail to divide
Sister chromatids are __________.
identical copies of a chromosome
You would know a dividing cell was a plant cell rather than an animal cell if you saw that __________.
it had formed a cell plate
During binary fission of a bacterium, __________.
origins of replication move apart
One event occurring during prophase is __________.
the beginning of the formation of a mitotic spindle
