When a terminally differentiated cell in an adult body dies, it can typically be replaced in the body by a stock of proliferating precursor cells.
Prophase is the first phase is when the two sister chromatids pair up and the nucleoli disappears. Prometaphase is the second phase where the microtubules begin to separate from each other, each pair of microtubules attach to the kinetochores and some nonkinetohore microtubules interact with those from the opposite pole of the spindle. Metaphase is the third phase where the chromosomes are lined up on the invisible line of the metaphase plate. Anaphase is the fourth phase where the two daughter chromosomes begin to separate from each other to opposite poles. Telophase is the last phase where the two daughter nuclei form creating two identical nuclei.
Answer:
False, chemical energy is not transfered or converted into cellular energy
Explanation:
Answer:
<h2>Catabolite repression
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Explanation:
1. Catabolite repression: it is the positive control of the lac operon.
2. It results in an increase in the rate of transcription. Here, the CAP protein is activated by cAMP which then bind to the lac operon and facilitate the binding of RNA polymerase to the promoter to transcribe the genes for lactose utilization.
3. Role of glucose in catabolite repression is that It stimulates transcription from the lac operon, causing an increase in cAMP levels in the cell. Glucose decreases the levels of cAMP in the cell, result in repressing transcription from the lac operon.
