What’s the following statement about the effect of modification in histone terminal on nucleosome stability is NOT correct:____
A. The positive charged amino acid residues in histone terminal benefit for the stable connection of histone and DNA.
B. The acetylation of Lys residue in histone terminal make the packaging of 10nm fiber more closer.
C. The phosphorylation of histone terminal reduces its positive charges and weakens the interaction of DNA and histone.
D. The acetylation and methylation site of histone can be used to recruit the chromatin remodeling complex, which would affect the interaction of DNA and histone.
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DNA fragment included in a nucleosome core particle is:____
A. 55bp
B. 146bp
C. 166bp
D. 200bp
Which of the following is NOT included in the histone core octamer of nucleosome:____
A. H1
B. H2A
C. H3
D. H4
E. H2B
HIV that causes AIDS is:____
A. Double –strand DNA virus
B. Single –strand DNA virus
C. RNA virus
D. Phage
Which of the following statement about genome is NOT correct:____
A. The whole nucleic acid information that responsible for the survival, proliferation, development and activities of an organism.
Both chromosomal genome and organelle genome can be included in a eukaryotic cell.
C. Some regulation sequences for gene expression are included in genome.
D. The most sequences of eukaryotic genome encode protein product.
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