1.2: Structure of DNA and RNA - Biology LibreTexts
网页DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are composed of two different classes of nitrogen-containing bases: the purines and pyrimidines. The most commonly occurring purines in DNA are adenine and guanine :
DNA vs. RNA – 5 Key Differences and Comparison - Technology …
网页2020年12月18日 · Both DNA and RNA are built with a sugar backbone, but whereas the sugar in DNA is called deoxyribose (left in image), the sugar in RNA is called simply ribose (right in image). The ‘deoxy’ prefix denotes that, whilst RNA has two hydroxyl (-OH) groups attached to its carbon backbone, DNA has only one, and has a …
What Is the Difference Between DNA and RNA? | Britannica
网页Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are complex molecular structures that control all hereditary characteristics of cells and thus of organisms. DNA is the master blueprint for life and constitutes the genetic material in all free-living organisms. RNA uses DNA to code for the structure of proteins synthesized in cells, and ...
DNA vs RNA – Similarities and Differences - Science Notes and …
网页2020年8月23日 · Three differences between DNA and RNA are that DNA uses the base thymine while RNA uses uracil, DNA uses the sugar deoxyribose while RNA uses ribose, and usually DNA is double-stranded and RNA is single-stranded.
Understanding biochemistry: structure and function of nucleic …
网页2019年10月11日 · We explain the structure of the DNA molecule, how it is packaged into chromosomes and how it is replicated prior to cell division. We look at how the concept of the gene has developed since the term was first coined and how DNA is copied into RNA (transcription) and translated into protein (translation).
Khan Academy
网页DNA and RNA structure and function. Nucleotides and polynucleotides. mRNA, rRNA, tRNA, miRNA, and siRNA.
3.11: Nucleic Acids - DNA and RNA - Biology LibreTexts
网页2023年10月31日 · The two main types of nucleic acids are DNA and RNA. Both DNA and RNA are made from nucleotides, each containing a five-carbon sugar backbone, a phosphate group, and a nitrogen base. DNA provides the code for the cell ‘s activities, while RNA converts that code into proteins to carry out cellular functions.
Chemical RNA Structure | Learn Science at Scitable
网页RNA consists of four nitrogenous bases: adenine, cytosine, uracil, and guanine. Uracil is a pyrimidine that is structurally similar to the thymine, another pyrimidine that is found in DNA. Like...
RNA | Definition, Structure, Types, & Functions | Britannica
网页2 天之前 · RNA, complex compound of high molecular weight that functions in cellular protein synthesis and replaces DNA as a carrier of genetic codes in some viruses. RNA consists of ribose nucleotides and the nitrogenous bases adenine, guanine, cytosine, and uracil. Learn about the structure, types, and functions of RNA.
Nucleic acid | Definition, Function, Structure, & Types
网页2024年9月9日 · The two main classes of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the master blueprint for life and constitutes the genetic material in all free-living organisms and most viruses.
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