BIO 1140 DGD April 7 - experimental observation?- When an...

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BIO 1140 DGD April 7, 2011
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The cell cycle: review Cell cycle stages: Interphase (G0, G1, S, G2); mitosis (Prophase, prometaphase, metaphase, anaphase, telophase); cytokinsesis
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The cell cycle (con’t)
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Regulation of the cell cycle The length of the cell cycle varies among different cell types Progression through the cell cycle is controlled at several key transition points Mitotic Cdk-cyclin drives progression through the G2-M transition by phosphorylating key proteins involved in the early stages of mitosis
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https://wikispaces.psu.edu/display/Biol230WCE/Mitosis, +Cell+Division+and+the+Cell+Cycle
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1.) For each of the following pairs of phases from the cell cycle, indicate how you could tell in which of the two phases a specific cell is located. a) G1 and G2 b) G1 and S c) G2 and M d) G1 and M
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2) Based on your understanding of the regulation of the eukaryotic cell cycle, how could you explain of the following
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Unformatted text preview: experimental observation?- When an abnormal, indestructible form of mitotic cyclin is introduced into cells, they enter into mitosis but cannot emerge from it and re-enter G1 phase. 3) Explain the difference between chromosomes and sister chromatids Multiple choice 4) Assuming that no errors occur in DNA replication, mitosis produces two daughter cells that are ______. a) Double in chromosomal content b) Genetically identical to the parental cell c) Able to grow indefinitely d) Slightly different from the parental cell 5) When does the nuclear envelope break down a) Prophase b) G2 of interphase c) S phase of interphase d) Mitosis 6) Which of the following would prevent a cell form going from progressing to the M phase? a) A decrease in the amount of cyclin B b) An increase in the amount of phosphate c) An increase in the amount of CDK2 d) A decrease in phosphatase activity...
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This note was uploaded on 03/30/2012 for the course SCIENCE BIO1140 taught by Professor Fenwick during the Spring '09 term at University of Ottawa.

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BIO 1140 DGD April 7 - experimental observation?- When an...

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