cycle with the correct terms. kinetochore After S phase _ appear to share a common centromere. condensation sister chromatids During G1, cells undergo the major portion of their . FtsZ proteins During interphase, all eukaryotic cells synthesize large amounts of . SMC proteins During G2, chromosomes begin to undergo . differentiation homologous The is a disklike protein structure found at the point of chromosomes replication constriction on the chromosome. centromere tubulin growth Interphase events Complete the sentences on the control of the cell cycle with the correct terms. kinetochore After S phase appear to share a common centromere. condensation sister chromatids During G1, cells undergo the major portion of their . FtsZ proteins During interphase, all eukaryotic cells synthesize large amounts of . SMC proteins During G2, chromosomes begin to undergo . differentiation homologous The _ is a disklike protein structure found at the point of chromosomes replication constriction on the chromosome. centromere tubulin growth
The Correct Answer and Explanation is:
Here’s how you can complete the sentences about the control of the cell cycle:
- After S phase, sister chromatids appear to share a common centromere.
- In the S phase (Synthesis phase) of the cell cycle, the chromosomes duplicate, forming sister chromatids. These chromatids are identical copies of the original chromosome and are connected at the centromere. The centromere is a constricted region where the two sister chromatids are held together. The centromere plays a crucial role in the segregation of chromosomes during mitosis.
- During G1, cells undergo the major portion of their growth.
- G1 phase (Gap 1) is the first phase of the cell cycle, right after the cell has divided. During G1, the cell undergoes significant growth and prepares for DNA replication in the next phase (S phase). The cell also synthesizes proteins and organelles, which are required for its function and future division. The growth in this phase ensures the cell has enough resources to replicate its DNA.
- During interphase, all eukaryotic cells synthesize large amounts of tubulin.
- Interphase is the phase of the cell cycle in which the cell prepares for division. It consists of three sub-phases: G1, S, and G2. During interphase, cells synthesize various proteins required for cell function and division. Tubulin is a protein that makes up microtubules, structures involved in maintaining cell shape and in the movement of chromosomes during mitosis.
- During G2, chromosomes begin to undergo condensation.
- G2 phase (Gap 2) follows the S phase, where DNA replication occurs. During G2, the cell continues to grow, and the chromosomes start to condense in preparation for mitosis. This condensation allows the chromosomes to become visible under a microscope, making it easier for the cell to distribute them accurately during cell division.
- The centromere is a disklike protein structure found at the point of constriction on the chromosome.
- The centromere is a crucial structure located at the point where two sister chromatids are joined. It plays an essential role in chromosome movement during mitosis and meiosis. Proteins like the kinetochore attach to the centromere to facilitate the movement of chromatids by microtubules during cell division.
These terms describe essential components and processes in the cell cycle that ensure proper cell division and function.
