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that move a cell through the cycle when it meets the correct requirements. If the cell does not meet the requirements, negative regulation molecules will either try to repair the damage or signal for apoptosis. In order for a cell to move through the cycle, it must go through several checkpoints. The G₁ checkpoint makes sure that the cell has favorable conditions for division. The cell must have enough growth and energy reserves to proceed onto the next phase of the cycle. At this stage, DNA is also inspected for damage. DNA that is not suitable, or cannot be repaired, will not move through to the S phase to be replicated and will exit the cell cycle by entering the inactive Go phase. The cell encounters the next review at the end of the G₂ phase. The G₂ phase includes protein synthesis and another round of growth. The G₂ checkpoint assesses the size and protein reserves of the cell as well as the accuracy of the chromosome replication. If DNA is damaged, the cell tries to repair the damage before the beginning of mitotic division. The M checkpoint determines if all of the sister chromatids are properly attached to spindle microtubules and ready for separation. The model shows the checkpoints of the cell cycle. G₂ checkpoint (88) (88) ⓇE Mcheckpoint Mitosis Cytokinesis G₁ G.checkpoint G₂ The separated chromatids are pulled toward each pole of the cell. The cell first experiences growth. The cell synthesizes DNA in its nucleus. The cytoplasm of the cell divides to form two daughter cells. The cell is not dividing nor preparing to divide. The cell creates proteins and organizes for division. G₁ O 0 0 O O 。。。。 O O 。。。。。 。。。oo O O Mitosis 0 O O O O Cytokinesis O O O O O T O

that move a cell through the cycle when it meets the correct requirements. If the cell does not meet the requirements, negative regulation molecules will either try to repair the damage or signal for apoptosis. In order for a cell to move through the cycle, it must go through several checkpoints. The G₁ checkpoint makes sure that the cell has favorable conditions for division. The cell must have enough growth and energy reserves to proceed onto the next phase of the cycle. At this stage, DNA is also inspected for damage. DNA that is not suitable, or cannot be repaired, will not move through to the S phase to be replicated and will exit the cell cycle by entering the inactive Go phase. The cell encounters the next review at the end of the G₂ phase. The G₂ phase includes protein synthesis and another round of growth. The G₂ checkpoint assesses the size and protein reserves of the cell as well as the accuracy of the chromosome replication. If DNA is damaged, the cell tries to repair the damage before the beginning of mitotic division. The M checkpoint determines if all of the sister chromatids are properly attached to spindle microtubules and ready for separation. The model shows the checkpoints of the cell cycle. G₂ checkpoint (88) (88) ⓇE Mcheckpoint Mitosis Cytokinesis G₁ G.checkpoint G₂ The separated chromatids are pulled toward each pole of the cell. The cell first experiences growth. The cell synthesizes DNA in its nucleus. The cytoplasm of the cell divides to form two daughter cells. The cell is not dividing nor preparing to divide. The cell creates proteins and organizes for division. G₁ O 0 0 O O 。。。。 O O 。。。。。 。。。oo O O Mitosis 0 O O O O Cytokinesis O O O O O T O

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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that move a cell through the cycle when it meets the correct requirements. If the cell does not meet the requirements, negative regulation molecules will either try to repair the damage or signal for apoptosis. In order for a cell to move through the cycle, it must go through several checkpoints. The G₁ checkpoint makes sure that the cell has favorable conditions for division. The cell must have enough growth and energy reserves to proceed onto the next phase of the cycle. At this stage, DNA is also inspected for damage. DNA that is not suitable, or cannot be repaired, will not move through to the S phase to be replicated and will exit the cell cycle by entering the inactive G₁ phase. The cell encounters the next review at the end of the G₂ phase. The G₂ phase includes protein synthesis and another round of growth. The G₂ checkpoint assesses the size and protein reserves of the cell as well as the accuracy of the chromosome replication. If DNA is damaged, the cell tries to repair the damage before the beginning of mitotic division. The M checkpoint determines if all of the sister chromatids are properly attached to spindle microtubules and ready for separation. The model shows the checkpoints of the cell cycle. G₂ checkpoint (88) Mcheckpoint Mitosis Cytokinesis G₁ G, checkpoint G₂ (1) The separated chromatids are pulled toward each pole of the cell. The cell first experiences growth. The cell synthesizes DNA in its nucleus. The cytoplasm of the cell divides to form two daughter cells. The cell is not dividing nor preparing to divide The cell creates proteins and organizes for division. G₁ ooo O Go O G₂ Mitosis Cytokinesis 00 O O O O O O O O O O 1 O
Transcribed Image Text:that move a cell through the cycle when it meets the correct requirements. If the cell does not meet the requirements, negative regulation molecules will either try to repair the damage or signal for apoptosis. In order for a cell to move through the cycle, it must go through several checkpoints. The G₁ checkpoint makes sure that the cell has favorable conditions for division. The cell must have enough growth and energy reserves to proceed onto the next phase of the cycle. At this stage, DNA is also inspected for damage. DNA that is not suitable, or cannot be repaired, will not move through to the S phase to be replicated and will exit the cell cycle by entering the inactive G₁ phase. The cell encounters the next review at the end of the G₂ phase. The G₂ phase includes protein synthesis and another round of growth. The G₂ checkpoint assesses the size and protein reserves of the cell as well as the accuracy of the chromosome replication. If DNA is damaged, the cell tries to repair the damage before the beginning of mitotic division. The M checkpoint determines if all of the sister chromatids are properly attached to spindle microtubules and ready for separation. The model shows the checkpoints of the cell cycle. G₂ checkpoint (88) Mcheckpoint Mitosis Cytokinesis G₁ G, checkpoint G₂ (1) The separated chromatids are pulled toward each pole of the cell. The cell first experiences growth. The cell synthesizes DNA in its nucleus. The cytoplasm of the cell divides to form two daughter cells. The cell is not dividing nor preparing to divide The cell creates proteins and organizes for division. G₁ ooo O Go O G₂ Mitosis Cytokinesis 00 O O O O O O O O O O 1 O
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