![]() This figure shows the generalized structure of nucleotides and their bases. The nitrogenous base can be a purine such as adenine (A) and guanine (G), or a pyrimidine such as cytosine (C) and thymine (T).įigure 1: Nucleotides are the building blocks of DNA and RNA. The nucleotide is named depending on the nitrogenous base. The important components of the nucleotide are a nitrogenous (nitrogen-bearing) base, a 5-carbon sugar (pentose), and a phosphate group. The building blocks of DNA are nucleotides. understanding modern biological science is impossible without a firm understanding of DNA structure and DNA replication (and PCR too).understanding how PCR works for diagnostic techniques requires a firm understanding of DNA structure and DNA replication.what microbe is causing an infection) in diagnostic approaches such as PCR testing DNA is used to identify microbes (e.g.how pathogens (disease-causing microbes) evolve/change over time (think of the seasonal flu strains or new variants of the virus that causes COVID-19) is related to its DNA (or the closely related molecule RNA in the case of the virus that causes COVID-19) and how that DNA changes over time.understanding how gene expression works enables us to understand the link between DNA and a microbe's characteristics.understanding DNA structure is essential to better understand gene expression.DNA information is used during the process of gene expression.the DNA of a microbe is the basic blueprint for that microbe's metabolism, characteristics, abilities, structure, and survival approaches.the DNA of a microbe dictates if that microbe is pathogenic or not and the degree of its pathogenicity.Here are a few ways that having a thorough understanding of DNA structure will impact your ability to understand additional microbiological topics: Understanding the structure of DNA is fundamental to a better understanding of biology overall, but particularly microbiology, disease, and modern medical approaches. Importance of Understanding DNA Structure
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