Ribonucleic acid is a nucleic acid polymer consisting of nucleotide monomers, which plays several important roles in the processes of transcribing genetic information from deoxyribonucleic acid (DNA) into proteins. RNA acts as a messenger between DNA and the protein synthesis complexes known as ribosome's, forms vital portions of ribosome's, and serves as an essential carrier molecule for amino acids to be used in protein synthesis. The three types of RNA include tRNA (transfer), mRNA (messenger) and rRNA (ribosomal).
Ribonucleic acid (RNA) is a biologically important type of molecule that consists of a long chain of nucleotide units. Each nucleotide consists of a nitrogenous base, a ribose sugar, and a phosphate. RNA is very similar to DNA, but differs in a few important structural details: in the cell, RNA is usually single-stranded, while DNA is usually double-stranded; RNA nucleotides contain ribose while DNA contains deoxyribose (a type of ribose that lacks one oxygen atom); and RNA has the base uracil rather than thymine that is present in DNA. RNA is transcribed from DNA by enzymes called RNA polymerases and is generally further processed by other enzymes. RNA is central to protein synthesis. Here, a type of RNA called messenger RNA carries information from DNA to structures called ribosomes. These ribosomes are made from proteins and Ribosomal RNA, which come together to form a molecular machine that can read messenger RNA's and translate the information they carry into proteins. There are many RNA's with other roles – in particular regulating which genes are expressed, but also as the genomes of most viruses.
DNA usually occurs in linear chromosomes in eukaryotes, and circular chromosomes in prokaryotes. Chromosomes set in a cell makes up its genome ,the human genome has approximately 3 billion base pairs of DNA arranged into 46 chromosomes. The information carried by DNA is held in the sequence of pieces of DNA called genes transmission of genetic information is achieved via complementary base pairing. The DNA sequence is copied into complementary RNA nucleotides .RNA copy is used to make matching protein sequence in a process called translation it depends on the interaction of RNA nucleotides. DNA replication is copying of genetic material. genomic DNA is located in cell nucleus of eukaryotes, mitochondria and chloroplasts. In prokaryotes ,the DNA is held within irregular shaped body in cytoplasm called nucleotide .The genetic information n genome is held with in genes, and the complete set of this information in an organism is called its genotype. A gene is a unit of heredity it influences a particular characteristic in an organism .In many species only a small fraction of the total sequence of genome encodes protein. Human genome consists of 1.5% protein-coding exons, with over 50% of human DNA consisting of non coding repetitive sequences. The reasons for the presence of so much non coding DNA in eukaryotic genomes and differences in genome size among the spices represent a long standing puzzle known as C-value among the species represent. T7RNA polymerase producing mRNA from a DNA template. Other non coding DNA sequences play structural roles in chromosomes. there are two types of genes they are Telomeres and controversy they platy important role stability and functioning of chromosomes
Ribonucleic acid (RNA) is a biologically important type of molecule that consists of a long chain of nucleotide units. Each nucleotide consists of a nitrogenous base, a ribose sugar, and a phosphate. RNA is very similar to DNA, but differs in a few important structural details: in the cell, RNA is usually single-stranded, while DNA is usually double-stranded; RNA nucleotides contain ribose while DNA contains deoxyribose (a type of ribose that lacks one oxygen atom); and RNA has the base uracil rather than thymine that is present in DNA. RNA is transcribed from DNA by enzymes called RNA polymerases and is generally further processed by other enzymes. RNA is central to protein synthesis. Here, a type of RNA called messenger RNA carries information from DNA to structures called ribosomes. These ribosomes are made from proteins and Ribosomal RNA, which come together to form a molecular machine that can read messenger RNA's and translate the information they carry into proteins. There are many RNA's with other roles – in particular regulating which genes are expressed, but also as the genomes of most viruses.
DNA usually occurs in linear chromosomes in eukaryotes, and circular chromosomes in prokaryotes. Chromosomes set in a cell makes up its genome ,the human genome has approximately 3 billion base pairs of DNA arranged into 46 chromosomes. The information carried by DNA is held in the sequence of pieces of DNA called genes transmission of genetic information is achieved via complementary base pairing. The DNA sequence is copied into complementary RNA nucleotides .RNA copy is used to make matching protein sequence in a process called translation it depends on the interaction of RNA nucleotides. DNA replication is copying of genetic material. genomic DNA is located in cell nucleus of eukaryotes, mitochondria and chloroplasts. In prokaryotes ,the DNA is held within irregular shaped body in cytoplasm called nucleotide .The genetic information n genome is held with in genes, and the complete set of this information in an organism is called its genotype. A gene is a unit of heredity it influences a particular characteristic in an organism .In many species only a small fraction of the total sequence of genome encodes protein. Human genome consists of 1.5% protein-coding exons, with over 50% of human DNA consisting of non coding repetitive sequences. The reasons for the presence of so much non coding DNA in eukaryotic genomes and differences in genome size among the spices represent a long standing puzzle known as C-value among the species represent. T7RNA polymerase producing mRNA from a DNA template. Other non coding DNA sequences play structural roles in chromosomes. there are two types of genes they are Telomeres and controversy they platy important role stability and functioning of chromosomes