Biology
Each gene contains a specific nucleotide sequence called the promoter region and it contains the initiation site, where proteins, called transcription factors, and RNA polymerase enzyme recognize and bind to. The enzyme-DNA-protein complex then causes the double helical DNA to unwind from the protective histones and H-bonds between bases break. The DNA in that region separates into its two polynucleotide chains and exposes the sequence of DNA complexes to be copied.
The enzyme then moves along the sequence of DNA until it reaches the initiation site. Translation is initiated and RNA polymerase catalyses the formation of a complementary RNA polynucleotide using the DNA sequence of the template strand as a template. It also ensures that the addition of RNA nucleotides occurs in a 5? to 3? direction, systematically, according to complementary base pairing. Hydrogen bonds then form between the base pairs. A and U, C and G, A and T. It also catalyses the formation of phosphodiester bonds when the free RNA nucleotides are added to the 3? end of the growing nucleotide chain. Upon reaching the end of the gene, it reads the termination sequence and H-bonds between the base pairs will break. The RNA molecule is released from the DNA. Hydrogen bonds then form between the base pairs of the two DNA polynucleotide chains and it rewinds around the protective histones into a double helix again.
- Q: Compare And Contrast Dna Replication And Transcription
Similarities: Both processes occur in the nucleus. Both processes also involve specific complementary base pairing. Both processes involving the unwinding of the double helix DNA. Both processes involve forming of hydrogen bonds between the original DNA...
- Translation
Translation is the process by which a triplet base sequence of mRNA molecules are converted into a specific sequence of amino acids in a polypeptide chain in the cytoplasm of a cell. It consists of initiation, elongation, and termination. The mRNA, a...
- Dna Is A Double Helix
KEY TERMS: Base pairing describes the specific (complementary) interactions of adenine with thymine or of guanine with cytosine in a DNA double helix (thymine is replaced by uracil in double helical RNA). Complementary base pairs are defined by the pairing...
- # 35 The Genetic Code - Protein Synthesis
The genetic code specifies the amino acids that are assembled to make polypeptides. The way that DNA codes for polypeptides is central to our understanding of how cells and organisms function. A polypeptide is coded for...
- # 34 Dna Structurer And Replication
DNA molecule consists of nucleotides in which the sugar component is deoxyribose whereas the RNA molecule has nucleotides in which the sugar is a ribose. Nucleotides Roles: are monomers for nucleic acid polymers, such as DNA and RNA....
Biology
Transcription
Each gene contains a specific nucleotide sequence called the promoter region and it contains the initiation site, where proteins, called transcription factors, and RNA polymerase enzyme recognize and bind to. The enzyme-DNA-protein complex then causes the double helical DNA to unwind from the protective histones and H-bonds between bases break. The DNA in that region separates into its two polynucleotide chains and exposes the sequence of DNA complexes to be copied.
The enzyme then moves along the sequence of DNA until it reaches the initiation site. Translation is initiated and RNA polymerase catalyses the formation of a complementary RNA polynucleotide using the DNA sequence of the template strand as a template. It also ensures that the addition of RNA nucleotides occurs in a 5? to 3? direction, systematically, according to complementary base pairing. Hydrogen bonds then form between the base pairs. A and U, C and G, A and T. It also catalyses the formation of phosphodiester bonds when the free RNA nucleotides are added to the 3? end of the growing nucleotide chain. Upon reaching the end of the gene, it reads the termination sequence and H-bonds between the base pairs will break. The RNA molecule is released from the DNA. Hydrogen bonds then form between the base pairs of the two DNA polynucleotide chains and it rewinds around the protective histones into a double helix again.
- Q: Compare And Contrast Dna Replication And Transcription
Similarities: Both processes occur in the nucleus. Both processes also involve specific complementary base pairing. Both processes involving the unwinding of the double helix DNA. Both processes involve forming of hydrogen bonds between the original DNA...
- Translation
Translation is the process by which a triplet base sequence of mRNA molecules are converted into a specific sequence of amino acids in a polypeptide chain in the cytoplasm of a cell. It consists of initiation, elongation, and termination. The mRNA, a...
- Dna Is A Double Helix
KEY TERMS: Base pairing describes the specific (complementary) interactions of adenine with thymine or of guanine with cytosine in a DNA double helix (thymine is replaced by uracil in double helical RNA). Complementary base pairs are defined by the pairing...
- # 35 The Genetic Code - Protein Synthesis
The genetic code specifies the amino acids that are assembled to make polypeptides. The way that DNA codes for polypeptides is central to our understanding of how cells and organisms function. A polypeptide is coded for...
- # 34 Dna Structurer And Replication
DNA molecule consists of nucleotides in which the sugar component is deoxyribose whereas the RNA molecule has nucleotides in which the sugar is a ribose. Nucleotides Roles: are monomers for nucleic acid polymers, such as DNA and RNA....