Concisely contrast and compare differences between prokaryotes and eukaryotes in
ID: 33747 • Letter: C
Question
Concisely contrast and compare differences between prokaryotes and eukaryotes in the process of DNA replication. Below I list the basic stages of DNA replication to prod your memory. Remember you must only contrast
and compare differences.
Stages of Replication:
1. Unwind DNA: DnaA binding; DnaB and DnaC; DnaB is Helicase; Single-Stranded Binding Proteins and function; Gyrases to release tension caused by replication bubble.
2. Primer: Primase to lay down primer of RNA nucleotides (DNA polymerase ? in eukaryotes); DNA polymerase must reference a 3
Explanation / Answer
Differences between Eukaryotic and Prokaryotic Cells
Prokaryotic cells are quite simple in structure. They have no nucleus, no organelles and a small amount of DNA in the form of a single, circular chromosome. Eukaryotic cells on the other hand, have a nucleus, multiple organelles and more DNA arranged in multiple, linear chromosomes.
Steps in DNA Replication
DNA replication begins at a specific spot on the DNA molecule called the origin of replication. At the origin, enzymes unwind the double helix making it accessible for replication. Each strand of the helix then separates from the other, exposing the now unpaired bases to serve as templates for new strands. A small segment of RNA -- ribonucleic acid -- is added as a primer, then new nucleotide bases that complement the unpaired bases can be assembled to form two daughter strands next to each parent strand. This assembly is accomplished with enzymes called DNA polymerases. When the process is complete, two DNA molecules have been formed identical to each other and to the parent molecule.
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