The M phase checkpoint ensures that all chromosomes are attached to the mitotic spindle. If this does not happen, cells would most likely be arrested in ________.
a) Telophase.
b) Prophase.
c) G2.
d) Metaphase.

In the cells of some organisms, mitosis occurs without cytokinesis. This will result ina. cells with more than one nucleus.b. cells that are unusually small.c. cells lacking nuclei.d. cell cycles lacking an S phase.

Cytochalasin B is a chemical that disrupts microfilament formation. This chemical would interfere witha. DNA replication.b. formation of the mitotic spindle.c. cleavage.d. formation of the cell plate.

Discuss the factors that control the division of eukaryotic cells grown in the laboratory. Cancer cells are easier to grow in the lab than other cells. Why do you suppose this is?

Tissue culture experiments with PDGF demonstrate that without this substance, __________.

When a cell in S phase is fused with a cell in G₁, __________.

Progression through the cell cycle is regulated by oscillations in theconcentration of which type of molecule?a. p53, Rb, and other tumor suppressorsb. receptor tyrosine kinasesc. cyclinsd. cyclin-dependent kinases