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What is a hydrogen bond? A type of weak chemical bond formed when the slightly positive hydrogen atom of a polar covalent bond in one molecule is attracted to the slightly negative atom of a polar covalent bond in another molecule (or in another region of the same molecule).
Hydrogen bonds hold the paired nitrogenous bases together. Because hydrogen bonds are weak bonds, the two strands of DNA are easily separated—a characteristic that is important to DNA's function. 2.A. Describe the discoveries that led to the modeling of DNA.
Study with Quizlet and memorize flashcards containing terms like Hydrogen Bond Definition, Qualities that water has due to the hydrogen bonds, hydrophilic interactions and more.
17 Οκτ 2024 · DNA molecules form a three-dimensional structure known as a DNA double helix. Make sure you can name the different components of a DNA molecule (sugar-phosphate backbone, nucleotide, complementary base pairs, phosphodiester bonds, hydrogen bonds) and make sure you are able to locate these on a diagram.
Identify the sugar, phosphate, nitrogenous base, 5' and 3' carbons in a nucleotide and the key difference between DNA and RNA. Explain the structure of the double helix, including the role of hydrogen bonds and covalent (phosphodiester) bonds. Explain why the abundance of A is roughly equal to T and G is roughly equal to C in DNA.
mselves specified by DNA. In Chapters 8-12 we will learn how the cell replicates DNA molecules and does so faithfully, how it retrieves genetic information to direct the synthesis of proteins, and how it regulates this flow of genetic inform.
In Mechanisms of Microbial Genetics, we will discuss in detail the ways in which DNA uses its own base sequence to direct its own synthesis, as well as the synthesis of RNA and proteins, which, in turn, gives rise to products with diverse structure and function. In this section, we will discuss the basic structure and function of DNA.
