At which of the cell-cycle checkpoints do external forces have the greatest influence? a. G1 checkpoint b. G2 checkpoint c. M checkpoint d. G0 checkpoint
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At which of the cell-cycle checkpoints do external forces
have the greatest influence?
a. G1 checkpoint
b. G2 checkpoint
c. M checkpoint
d. G0 checkpoint
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- What is necessary for a cell to pass the G2 checkpoint? a. cell has reached a sufficient size b. an adequate stockpile of nucleotides c. accurate and complete DNA replication d. proper attachment of mitotic spindle fibers to kinetochoresWhat part of the cell cycles are checkpoints that regulate the transition from anaphase to telophase? A. M checkpoint B. G2 checkpoint C. G1 checkpoint D. S checkpointAt which point in the cell cycle are cells the smallest? a. the beginning of G1 b. S c. G2 d. the beginning of mitosis
- At what point in the cell cycle does the amount of DNA double in a cell? A. G1 phase B. S phase C. Cytokinesis D. Metaphase 25.You have a cell with a mutated and abnormal p53 protein. Which of the following will be affected in that cell? a. Apoptosis b. DNA repair c. Ability to arrest/pause the cell cycle 1. a,b and c 2. a & b 3. a&c 4. b onlyCells that DO NOT divide or participate in the cell cycle are usually arrested in what phase? a. S phase b. Prophase c. G2 d. G0 e. M phase
- What is a critical event that occurs during S phase of the cell cycle?a. Cells decide whether or not to divide.b. DNA replication produces pairs of sister chromatids.c. The chromosomes condense.d. The single nucleus is divided into two nuclei.Describe the purpose of cell cycle checkpoints.Which statement does not describe cell cycle checkpoints? A. Normal checkpoints assess damage to DNA. B. Faulty checkpoints may lead to abnormal cell growth. C. Cell checkpoints can fail in mitosis and meiosis. D. Cells that bypass the G2 checkpoint move to the synthesis stage.
- Which phase of the cell cycle is depicted in this diagram? a) S phase b) early prophase c) metaphase d) G1 phaseWhich cell cycle checkpoint allows damaged DNA to be repaired before it is passed on to daughter cells? a. G1 b. G2 c. S d. mitoticThe cell cycle control system is a cycling set of molecules in the cell that triggers and coordinates key events in the cell cycle. This is all controlled by growth factors. a) Identify the major checkpoints in a cell and its function. b)Explain the role of the growth factor.