Which of the following enzymes are used to join bits of DNA?
Correct answer: A. Ligase
- A. Ligase
- B. Primase
- C. DNA polymerase
- D. Endonuclease
Explanation
DNA ligase is a type of enzyme that catalyses the formation of a phosphodiester bond between two DNA molecules. This is the same type of bond that links the nucleotides in DNA. DNA ligase is used in a variety of cellular processes, including DNA replication, DNA repair, and recombinant DNA technology.Primase, DNA polymerase, and endonuclease are all involved in DNA replication, but they are not involved in joining bits of DNA.Primase is an enzyme that synthesises short RNA primers, which are needed to initiate DNA replication.DNA polymerase is an enzyme that synthesises DNA molecules from a DNA template.An endonuclease is an enzyme that cuts DNA molecules at specific sites.
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About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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