Multiple Choice
In which phase of the cell cycle is there no checkpoint?
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3. Energy & Cell Processes
Cell Cycle Regulation
Back3. Energy & Cell Processes
Cell Cycle Regulation
- Multiple Choice
Checkpoints within the cell cycle:
3176views18rank - Multiple Choice
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.
4809views14rank - Multiple Choice
Which of the following cell cycle checkpoints ensures that the genetic material is fully replicated before mitosis?
3014views25rank - Multiple ChoiceTissue culture experiments with PDGF demonstrate that without this substance, __________.1558views1rank
- Multiple ChoiceWhen a cell in S phase is fused with a cell in G1, __________.2535views
- Textbook QuestionProgression 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 kinases2049views
- Textbook QuestionThe decline of MPF activity at the end of mitosis is due toa. the destruction of the protein kinase Cdk.b. decreased synthesis of Cdk.c. the degradation of cyclin.d. the accumulation of cyclin.2384views
- 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 cell2241views
- Textbook QuestionApoptosis involves all but which of the following?a. fragmentation of the DNAb. cell-signaling pathwaysc. lysis of the celld. digestion of cellular contents by scavenger cells1584views
- Textbook QuestionIn 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.2081views
- Textbook QuestionCytochalasin 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.2040views
- 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?1358views
- Textbook Question
Why is regulation of the cell cycle necessary?
545views - Textbook Question
Mark the following statements about the cell cycle as true or false. If a statement is false, correct it to make a true statement.
During the S phase of the cell cycle, the cell stalls until conditions for division are more favorable
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