The theories about the cell senescence include____（）
A. Mitochondrial ageing
B. Reactive oxygen species （ROS）
C. Replicative ageing and telomere shortening
D. The evolutionary theories of senescence
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细胞学说的创始人是（）
A. R．Hook
B. Schleiden
C. and Schwann
D. C．R．Ｂrown
E. D．W．Flemming
F. E．C．Darwin
which does not belong to the post-translational regulation of gene expression（）
A. protein ‘s acetylation
B. protein ‘s phosphorylation
C. protein ‘s methylation
DNA methylation
Which factor could not regulate the cell cyle（）
A. Growth factors
B. cAMP and cGMP
C. Oncogen
D. Cholesterol
What’s the main funtion of MPF（mature promoting factors）（）
A. Induce the condesion of chromatin
B. Induce the phosphorylation of nuclear lamin
C. Induce the phosphorylation of nucleolus and its dissolution
D. All of the above
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