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What happens in the stage that is before mitosis in the cell cycle?
- a)A period of DNA synthesis
- b)The cytoplasm separates
- c)A period of growth, during which time DNA is checked for errors
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
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What happens in the stage that is before mitosis in the cell cycle?a)A...
The stage before mitosis involves a period of growth, during which time DNA is checked for errors. The daughter cells must be perfect copies of the parent cell.
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What happens in the stage that is before mitosis in the cell cycle?a)A...
In the cell cycle, the stage that occurs before mitosis is called interphase. Interphase is a period of growth and preparation for cell division. It can be further divided into three phases: G1 phase, S phase, and G2 phase.
1. G1 Phase:
During the G1 phase, the cell grows and carries out its normal functions. This phase is also known as the first gap phase. The cell synthesizes proteins and increases its organelle and cytoplasmic volume. It prepares for DNA replication and monitors its internal and external environment. It also checks for any errors or damage in the DNA before proceeding to the next phase.
2. S Phase:
The S phase stands for synthesis phase. In this phase, DNA replication takes place. The cell duplicates its genetic material to prepare for cell division. Each chromosome is replicated, resulting in two identical sister chromatids held together by a centromere. The replication process ensures that each daughter cell receives a complete set of genetic information.
3. G2 Phase:
After DNA replication in the S phase, the cell enters the G2 phase, also known as the second gap phase. During this phase, the cell continues to grow and prepare for mitosis. It synthesizes additional proteins and organelles to support cell division. The cell also checks for any errors or damage in the replicated DNA before entering mitosis.
In summary, the stage before mitosis in the cell cycle is interphase, which consists of the G1, S, and G2 phases. During this stage, the cell undergoes growth, DNA replication, and prepares for cell division. The G1 and G2 phases also include checkpoints where the cell checks for any errors or damage in the DNA before proceeding to the next phase.
1. G1 Phase:
During the G1 phase, the cell grows and carries out its normal functions. This phase is also known as the first gap phase. The cell synthesizes proteins and increases its organelle and cytoplasmic volume. It prepares for DNA replication and monitors its internal and external environment. It also checks for any errors or damage in the DNA before proceeding to the next phase.
2. S Phase:
The S phase stands for synthesis phase. In this phase, DNA replication takes place. The cell duplicates its genetic material to prepare for cell division. Each chromosome is replicated, resulting in two identical sister chromatids held together by a centromere. The replication process ensures that each daughter cell receives a complete set of genetic information.
3. G2 Phase:
After DNA replication in the S phase, the cell enters the G2 phase, also known as the second gap phase. During this phase, the cell continues to grow and prepare for mitosis. It synthesizes additional proteins and organelles to support cell division. The cell also checks for any errors or damage in the replicated DNA before entering mitosis.
In summary, the stage before mitosis in the cell cycle is interphase, which consists of the G1, S, and G2 phases. During this stage, the cell undergoes growth, DNA replication, and prepares for cell division. The G1 and G2 phases also include checkpoints where the cell checks for any errors or damage in the DNA before proceeding to the next phase.
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What happens in the stage that is before mitosis in the cell cycle?a)A period of DNA synthesisb)The cytoplasm separatesc)A period of growth, during which time DNA is checked for errorsd)None of theseCorrect answer is option 'C'. Can you explain this answer?
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