QUESTION 6 Mitogens are extracellular signals that stimulate cell growth suppres

Question

QUESTION 6 Mitogens are extracellular signals that stimulate cell growth suppress cell growth suppress cell death stimulate cell division QUESTION 7 Cells of the immune system can trigger apoptosis in infected cells. Which one of the following statements is TRUE regarding the pathway by which immune cells stimulate apoptosis? Immune cells trigger an apoptosis pathway that uses only executioner caspases. Immune cells activate death receptors in target cells. Immune cells trigger an apoptosis pathway that uses only initiator caspases. Apoptosis triggered by immune cells leads to release of cytochrome C from mitochondria.

Explanation / Answer

Answer.

6. D, Stimulate cell division: Mitogen is a biological compound which encourages cell division. The activate both DNA replication and cell division.

7. D, apoptosis by immune ssten can leads to cytochrome C. The leakage of cytochrome C into the cytosol activates caspase-9.

Q. What stage of cell division :D, metaphase. All chromosomes are tight with sister chromatid and are alinged at the center.

8. D, it activates kimases such as ATM, ATR, DNA-PK, or CHK2.

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