DNA Structure and Replication What does ligase do during replication of DNA? Synthesizes the lagging strand Digests mRNA when it is no longer needed Makes copies of mRNA from DNA Joins nicks in DNA strands Synthesizes the lagging strand Digests mRNA when it is no longer needed Makes copies of mRNA from DNA Joins nicks in DNA strands ANSWER DOWNLOAD EXAMIANS APP
DNA Structure and Replication Which of the following is an active site on its single polypeptide chain for DNA Polymerase I? 5' → 3' polymerase 3' → 5' exonuclease 5' → 3' exonuclease All of these 5' → 3' polymerase 3' → 5' exonuclease 5' → 3' exonuclease All of these ANSWER DOWNLOAD EXAMIANS APP
DNA Structure and Replication DNA replication in eukaryotes occurs only in G1 phase G2 phase M phase S phase G1 phase G2 phase M phase S phase ANSWER DOWNLOAD EXAMIANS APP
DNA Structure and Replication DNA gyrase in E. coli adds positive supercoils to chromosomal DNA can be inhibited with antibiotics performs the same function as helicase in eukaryotes is required only at the oriC site adds positive supercoils to chromosomal DNA can be inhibited with antibiotics performs the same function as helicase in eukaryotes is required only at the oriC site ANSWER DOWNLOAD EXAMIANS APP
DNA Structure and Replication In the study of one experiment it was found that the value of Tm for DNA is = 40° C. If the cell has 20% GC at the above Tm, then what will be value of 'Tm' if the GC% increases to 60%? Decreases Increases Remains same Can not be compared Decreases Increases Remains same Can not be compared ANSWER DOWNLOAD EXAMIANS APP
DNA Structure and Replication In DNA double helix, the two DNA chains are held together by None of these ionic bonds between the pair of bases hydrogen bonds between the pair of bases covalent bonds between the pair of bases None of these ionic bonds between the pair of bases hydrogen bonds between the pair of bases covalent bonds between the pair of bases ANSWER DOWNLOAD EXAMIANS APP
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