3. Energy & Cell Processes

Cell Cycle Regulation

3. Energy & Cell Processes

Cell Cycle Regulation

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Cell Cycle Regulation

Cell Cycle Checkpoints

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Animation: Control of the Cell Cycle

Cyclins and CDKs Cell Cycle Regulation

The Cell Cycle and its Regulation

Professor Dave Explains

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Cell cycle control | Cells | MCAT | Khan Academy

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Cell cycle control | Cells | MCAT | Khan Academy

The Cell Cycle (and cancer) [Updated]

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Multiple Choice

Checkpoints within the cell cycle:

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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.

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Multiple Choice

Which of the following cell cycle checkpoints ensures that the genetic material is fully replicated before mitosis?

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Multiple Choice

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

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

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Textbook Question

Progression 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 kinases

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Textbook Question

The 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.

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Textbook Question

Which 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 cell

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Textbook Question

Apoptosis 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 cells

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Textbook Question

In 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.

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Textbook Question

Cytochalasin 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.

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Textbook Question

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?

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Textbook Question

Why is regulation of the cell cycle necessary?

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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.

a. During the S phase of the cell cycle, the cell stalls until conditions for division are more favorable

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Multiple Choice

What is the purpose of cell cycle checkpoints?

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3. Energy & Cell Processes

Cell Cycle Regulation

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