The
actions of alkylating agents:( )
A: are
cell-cycle dependent
B: Cause
cross-linking of DNA strands
C: Inhibit
DNA synthesis
D: Inhibit
protein synthesis
actions of alkylating agents:( )
A: are
cell-cycle dependent
B: Cause
cross-linking of DNA strands
C: Inhibit
DNA synthesis
D: Inhibit
protein synthesis
举一反三
- Which<br/>of the following statement about DNA polymerase of eukaryotes is NOT<br/>true:() A: DNA<br/>pol α/primase are involved in initial synthesis of the nascent<br/>strand. B: DNA<br/>polδ and ε are mainly responsible for the synthesis of<br/>DNA chains. C: Replacement<br/>of DNA polymerase could happen during DNA synthesis process. D: There<br/>are five kinds of DNA pol:α、β、γ、δ<br/>and ε in eukaryotes
- The<br/>enzyme closely related to the synthesis of RNA primer is:() A: DNA<br/>pol α; B: DNA<br/>pol γ; C: DNA<br/>pol δ; D: DNA<br/>pol I; E: DNA<br/>pol III
- The<br/>role of RNA primer during DNA replication is:() A: to<br/>guide DNA polymerase to bind with DNA template B: to<br/>provide 5’ phosphate end C: to<br/>provide attachment sites for four kinds of NTP D: inducing<br/>synthesis of RNA E: to<br/>provide 3’-OH end to initiate synthesis of new DNA
- The chemical nature of the<br/>primer required for the synthesis of DNA is ( ) A: DNA B: Histone C: RNA D: hnRNA
- Which<br/>is correct about DNA polymerase and RNA polymerase:() A: RNA<br/>polymerases use nucleoside diphosphate instead of nucleoside<br/>triphosphate for synthesis of polynucleotide chains B: RNA<br/>polymerases need primer and add nucleotides in the 5 'end of the<br/>polynucleotide chain C: DNA<br/>polymerase can add nucleotides in both ends of the polynucleotide<br/>chain D: All<br/>of the RNA polymerases and DNA polymerases can only add nucleotides<br/>in the 3’ end of the polynucleotide chain