Dna Double Helix Structure And Components — a labelled NEET Biology diagram with a definitions lexicon.
DNA Double Helix Structure and Components Labelled parts: DNA double helix, A=T, 2 hydrogen bonds, G=C, 3 hydrogen bonds, Major groove, Minor groove, Sugar-phosphate backbone, Base pairs, 5' end, 3' end, 2.0 nm diameter, 3.4 nm per turn, Nucleotide structure, Phosphate group, Deoxyribose sugar, Nitrogenous base, A, T, G, C, DNA vs RNA, Double stranded, Single stranded, Deoxyribose sugar, Ribose sugar, Thymine (T), Uracil (U), Stores genetic information, Protein synthesis. A five-carbon pentose sugar that forms the backbone of RNA molecules. FYI: Unlike deoxyribose (found in DNA), ribose sugar possesses a hydroxyl (-OH) group at the 2' carbon position. The nitrogen-containing organic bases (Adenine, Guanine, Cytosine, Thymine/Uracil) that form the structural components of nucleic acids. FYI: Purines (Adenine and Guanine) have a double-ring structure, while pyrimidines (Cytosine, Thymine, and Uracil) have a single-ring structure. A chemical group ( PO 4 3- ) that links nucleotides together to form the sugar-phosphate backbone of DNA and RNA. FYI: The phosphate group provides the negative charge necessary for the structural integrity and stability of the nucleic acid backbone. The characteristic spiral structure of DNA, consisting of two antiparallel strands held together by hydrogen bonds between complementary nitrogenous bases. FYI: The base pairing rules (A-T and G-C) dictate the geometry and stability of the double helix structure. A pyrimidine nitrogenous base that serves as a substitute for Thymine (T) in RNA. FYI: Uracil pairs specifically with Adenine (A) in RNA, distinguishing it from DNA where T pairs with A. The function of nucleic acids (DNA and RNA) to carry and transmit the hereditary traits from one generation to the next. FYI: DNA is the primary molecule responsible for storing the stable, long-term genetic blueprint of an organism. The biological process by which ribosomes translate the genetic information encoded in mRNA into a specific sequence of amino acids, forming a polypeptide chain. FYI: This process occurs in two main stages: Transcription (DNA to mRNA) and Translation (mRNA to protein).