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Why the structure of DNA is key to the process of DNA replication?
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Which are characteristics of DNA replication?
DNA replication is : semiconservative, bidirectional, begins at unique sites (origins)
What is the The key process for information storage and transfer to offspring cells?
DNA replication
What is The key process for information storage and transfer to offspring cells?
DNA replication
What key event happens during the s phase?
synthesis of DNA DNA Replication
What is the structure and function of DNA Include DNA replication?
DNA controls the formation of cells in your body, the products they release and everything they do, as well as the process of protein synthesis. DNA is found in the cells nucleus (the control center of the cell) in the chromosomes (which are composed of DNA strands). DNA is in a shape like a coiled ladder (a double helix), the sides of the "ladder" are made up of alternating subunits of sugars and phosphates and the "ladder rings" are pairs of nitrogen bases, adenine and thymine, guanine and cytosine. The sequence of these bases forms a code, which controls the production of proteins in the cell. A section of the DNA that codes for a specific protein is called a gene. The Double Helix structure of DNA allows it to replicate easily due to the weak hydrogen bonds that unzip quickly. The structure allows allot of information to be stored in small space as the double helix curves.
How is the structure of DNA related to DNA replication?
The DNA structure shows important information on how DNA replication occurs. The pairing pattern of the nitrogen bases is the key to understanding how it occurs. The four nitrogen bases are adenine, thymine, guanine, and cytosine. Only adenine and thymine pair together and only guanine and cytosine pair together.
What was james watsons hypothesis for the structure of the dna?
KEY FACT In 1953, James Watson and Francis Crick put forward their hypothesis that DNA had a double helix structure. Their first attempt to identify the structure of DNA was not successful, however, in 1953 they put forward their hypothesis that DNA had a double helix structure.
Which enzyme is the key player in replication?
In prokaryotes: DNA gyrase - a topoisomerase II protein that introduces negative supercoils in the DNA to reduce torsional stressDNA helicase - breaks the hydrogen bonds between nucleotides and unzips the DNA double helixSingle stranded binding proteins - stabilize DNA be keeping the DNA strands from reannealingDNA Polymerase III - polymerizes nucleotides forming a new DNA strandLoading clamp - loads the DNA strand into pol IIIDNA Primase - lays down an RNA primer on the lagging strandDNA Polymerase I - replaces RNA primer with DNADNA Ligase - ligates DNA strand together on the lagging strandIn eukaryotes:DNA Pol III is replaced by DNA Pol DeltaPol I is replaced by Pol AlphaRPA - replication protein A replaces the SSBsRFC - replication factor C replaces DNA loading clampPCNA replaces the beta subunit
What effect does the lock and key process have on the enzyme structure?
Easily Explained thusly: When the key is in the lock the Enzyme has one Structure, and when the key is not in the lock the Enzyme has another Structure. Note that the presence of a key may either activate or deactivate an Enzyme, depending upon the conditions.
How are mutations prevented during DNA replication?
DNA polymerase checks DNA for errors.DNA polymerase checks DNA for errors by breaking the hydrogen bonds between the paired nitrogen bases in the DNA molecule. This causes the molecule to separate into two individual strands.
What are the two properties that make up DNA?
DNA (deoxyribonucleic acid) is composed of two types of molecules: deoxyribose sugars and phosphate groups. These molecules form the backbone of the DNA strand, with the deoxyribose sugars and phosphate groups alternating to create a stable structure.
Who was Alfred delbruck?
Alfred Delbruck was a German biophysicist who made significant contributions to the field of molecular biology, particularly in the study of bacteriophages. He is known for his work on the structure and replication of viral DNA. Delbruck also played a key role in the development of the "phage group," a collaborative research effort that laid the foundation for the field of molecular biology.
