1. How does DNA copy itself through the process of replication? What is meant by
ID: 48994 • Letter: 1
Question
1. How does DNA copy itself through the process of replication? What is meant by semi-conservative replication?
2. What is the process of transcription? What is the role of mRNA and how does it relate to DNA?
3. What is the process of translation? What is the role of the ribosome and tRNA? How many RNA nucleotides “code” for an amino acid? How are the amino acids connected to make proteins?
4. How many amino acids are there? Is there more than one codon for each amino acid?
5. Describe how a change in DNA sequence could result in a changed sequence of amino acids in a protein.
6. What is a regulatory region in DNA and how can it control gene expression?
7. What is a transgenic organism?
Explanation / Answer
1.
The enzyme in charge of replication is called a helicase (since it unwinds the helix). The place where the double helix of DNA is opened up and the Deoxyribonucleic acid is copied is called a replication fork. as the strands are separated, an enzyme called Deoxyribonucleic acid polymerase copies each of the strand using the base-pairing rule.
Semiconservative replication tells the mechanism through which Deoxyribonucleic acid is replicated in all the known cells.
2.
The initial step of gene expression is Transcription, in which a specific segment of Deoxyribonucleic acid is copied into Ribonucleic acid (mRNA) by the RNA polymerase enzyme. Both Ribonucleic acid and Deoxyribonucleic acid are nucleic acids, which uses the base pairs of nucleotides as the complementary language. Deoxyribonucleic acid stores the genetic info whereas mRNA transcribes that info.
3.
Translation is the process of translating the sequence of a messenger RNA molecule to a series of amino acids during protein synthesis. A ribosome comes along, and uses Transfer RNA to bring the appropriate amino acids together to make a protein. 3 nucleotides codes for an amino acid . The amino acids are combined To make protein by dehydration synthesis to make the peptide bonds.
4.
Their are total 20 amino acids , No, few amino acids have more than 1 codon .
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.