Which of the following statements about prokaryotic and eukaryotic DNA replication is NOT true:()
A. Replication fork are usually advanced to the two sides after initiation of replication
B. The replication direction of two nascent strand is 5'→3'
C. For one DNA template strand, the replication is continuous on one side of replication origin and discontinuous on the other side.
D. Okazaki fragments formation and RNA primer removal would happen in both eukaryotic and prokaryotic cells.
E. The whole process of DNA replication can occur spontaneously without consumption of ATP.
查看答案
Okazaki fragment refers to()
A. DNA fragments in DNA template
B. DNA fragments synthesized in lagging strand
C. DNA fragments synthesized in leading strand
D. RNA fragments synthesized by primase
E. DNA fragments synthesized by DNA ligase
Which of the following statement about DNA replication of E.coli is NOT true:()
A. Four kinds of dNMP are needed.
B. It requires DNA ligase.
C. RNA primer will be formed in the process.
DNA polymerase I is needed.
DNA denaturation means:____
A. Depolymeriztion of polynucleotide chain
B. Supercoiled DNA molecule turn to double helix structure
C. The phosphodiester bond of the molecule has been broken
D. The hydrogen bond between bases has been broken
E. The complete hydrolysis of the nucleic acid molecule
Which of the following statement about nucleic acid hybridization is correct :____
A. It could happen between two DNA strands from different sources
B. It could happen between DNA and RNA strands from different sources
C. It could happen between RNA strands and its encoded peptides
D. Hybridization process is based on the DNA denaturation and renaturation
E. The hybridization techniques could be used to study the structure and function of nucleic acids
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