题目内容

The basic component of nucleic acid is: ____

A. phosphate and ribose
B. nucleoside and nitrogen bases
C. mononucleotide
D. nitrogenous bases
E. deoxyribose and nitrogen bases

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Based on “Central Dogma”, the direction to pass biological information is:

A. DNA>Protein>RNA
B. RNA>DNA> Protein
C. DNA>RNA> Protein
D. Protein >DNA>RNA

The finding of Okazaki fragments proves that the replication of DNA is:

A. semi-conservative replication.
B. continuous replication.
C. indirect replication.
D. semi-continuous replication.

In 1953, Watson and Crick found that:

A. Two polynucleotide chains form double helix structure of DNA by hydrogen bond linkage.
B. DNA replication is semi-conservative and usually form heteroduplex DNA consisted of one parental chain and one daughter chain.
C. Three continuous nucleic acids consist of a genetic code.
D. Genetic material is usually DNA instead of RNA.

Which one in the following can be used for DNA sequencing:

A. Gersang method.
B. X-ray diffraction method.
C. Sanger dideoxy-mediated chain termination method.
D. site-mutagenesis.

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