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.2757Has a video solution.
Multiple ChoiceWhich of the following cell cycle checkpoints ensures that the genetic material is fully replicated before mitosis?127881Has a video solution.
Multiple ChoiceTissue culture experiments with PDGF demonstrate that without this substance, __________. 317
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 kinases598Has a video solution.
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.856Has a video solution.
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 cell691Has a video solution.
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 cells430Has a video solution.
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.634Has a video solution.
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.434Has a video solution.
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?252Has a video solution.
