Multiple ChoiceThe 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.3918views8rank
Multiple ChoiceWhich of the following cell cycle checkpoints ensures that the genetic material is fully replicated before mitosis?2270views17rank
Multiple ChoiceTissue culture experiments with PDGF demonstrate that without this substance, __________. 935views1rank
Textbook QuestionProgression through the cell cycle is regulated by oscillations in the concentration of which type of molecule? a. p53, Rb, and other tumor suppressors b. receptor tyrosine kinases c. cyclins d. cyclin-dependent kinases1148views
Textbook QuestionThe decline of MPF activity at the end of mitosis is due to a. the destruction of the protein kinase Cdk. b. decreased synthesis of Cdk. c. the degradation of cyclin. d. the accumulation of cyclin.1622views
Textbook QuestionWhich of the following occurs during apoptosis? (A) lysis of the cell (B) direct contact between signaling cells (C) fragmentation of the DNA (D) release of proteases outside the cell1468views
Textbook QuestionApoptosis involves all but which of the following? a. fragmentation of the DNA b. cell-signaling pathways c. lysis of the cell d. digestion of cellular contents by scavenger cells972views
Textbook QuestionIn the cells of some organisms, mitosis occurs without cytokinesis. This will result in a. cells with more than one nucleus. b. cells that are unusually small. c. cells lacking nuclei. d. cell cycles lacking an S phase.1298views
Textbook QuestionCytochalasin B is a chemical that disrupts microfilament formation. This chemical would interfere with a. DNA replication. b. formation of the mitotic spindle. c. cleavage. d. formation of the cell plate.1326views
Textbook QuestionDiscuss 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?870views
Textbook QuestionMark the following statements about the cell cycle as true or false. If a statement is false, correct it to make a true statement.a. During the S phase of the cell cycle, the cell stalls until conditions for division are more favorable261views
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![The Cell Cycle (and cancer) [Updated]](https://img.youtube.com/vi/QVCjdNxJreE/mqdefault.jpg)
