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explain how and why damage to DNA is repaired. Living cells must be able to duplicate their entire set of genetic instructions every time they divide. Likewise, multicellular organisms must be able to pass on complete copies of their genetic information to future generations.
In this section, we explore how an elaborate “replication machine” achieves this accuracy, while duplicating DNA at rates as high as 1000 nucleotides per second.
focus on the enzymes that mediate DNA replication. In these descriptions, you will encounter several cases of structure suggesting a particular function. We will point out parallels and homologies between bacterial and eukaryotic replication components. This chapter covers the
DNA replication: Copying genetic information for transmission to the next generation. Occurs in S phase of cell cycle. Process of DNA duplicating itself. Begins with the unwinding of the double helix to expose the bases in each strand of DNA. from the mediumwill form base pairing via h.
In this chapter we describe the protein machines that replicate and repair the cell's DNA. These machines catalyze some of the most rapid and accurate processes that take place within cells, and their mechanisms clearly demonstrate the elegance and efficiency of cellular chemistry.
All organisms must duplicate their DNA with extraordinary accuracy before each cell division. In this section, we explore how an elaborate “replication machine” achieves this accuracy, while duplicating DNA at rates as high as 1000 nucleotides per second.
DNA is amazing material with respect to its information storage potential. Composition of DNA: Deoxyribonucleic acid (DNA) is a polymer, i.e., a long, slender molecule composed of many, small, repeating units called nucleotides.
