10. Which number represents DNA synthesis? B) II C) III D) IV 11. What is th pho

Question

10. Which number represents DNA synthesis? B) II C) III D) IV 11. What is th phosphorylating them? A) ATPases B) kinases C) cyclins D) chromatin E) protein kinases e name of enzymes that control the activities of other proteins by 12. Degradation of cyclins is controlled by: A) phosphorylation. B) ubiquitylation C) dephosphorylation D) transcription E) All of the above 13. Proto-oncogene product causes: A) stimulation of cell cycle. B) inhibits cell cycle C) loss/inactivating mutation causes cancer D) none of the above. 14. The following type of mutation in a proto-oncogene may cause cancer in human: A) Translocation of gene B) Gene amplification C) point mutation within regulatory element D) Point mutation within gene E) All of the above 15. The following statement is true about a proto-oncogene mutation to induce cell division of a mammalian cell: A) proto-oncogene product must have an increased the activity B) proto-oncogene product must have decreased activity C) tumor suppressor gene product must have an increased activity. D) proto-oncogene must lose ability to express mRNA

Explanation / Answer

10. B. DNA synthesis is represented as ||.

11. E. Protein kinases are the enzymes that control the activities of other proteins by phosphorylating them.

12. B. Degradation of cyclin is carried out by ubiquitin pathway.

13. C. Proto oncogenes product mutational inactivation which allows rapid division of cells causing cancer.

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