Which statement best describes the function of trna in translation?
Mrna translation (advanced)
Explanation: The sigma factor is needed only for transcription to begin. During the elongation process of transcription, the sigma subunit often falls off the enzyme. The sigma factor’s binding is a crucial signal for transcription to begin.
In both eukaryotes and prokaryotes, the codon AUG initiates translation. When a tRNA molecule interacts with this codon, a methionine residue enters the ribosome and serves as the starting point for amino acid elongation.
Explanation: Helicases are essential for separating two DNA strands so that transcription can proceed. Since polymerases only operate on single strands of DNA, the double strands’ bonds must be broken.
Which of the following transcription factors are the first to bind DNA in heterochromatin regions, often promote euchromatin formation, and recruit other transcriptional machinery to promote transcription?
Explanation: Pioneer factors is the right answer. Pioneer factors recruit histone demethyltransferases and acteyltransferases to alter proximal histones, enabling them to bind DNA in condensed regions and promote euchromatin formation. In order to facilitate transcription, these pioneer factors recruit other transcription factors and co-factors. DNA polymerases play a role in DNA replication rather than transcription. The RNA holoenzyme is a protein complex that binds promoters and catalyzes transcription. It is made up of RNA polymerase, transcription factors, and regulator proteins.
Transcription and translation
TrueConsider the processes that govern the charging process.
Protein synthesis | cells | biology | fuseschool
An aminoacyl tRNA synthetase enzyme recognizes only one amino acid, but since each amino acid has several codons, each enzyme can also recognize multiple tRNAs.
ATP stands for adenosine tri
Aminoacyl tRNA synthetaseAminoacyl tRNA synthetaseAminoacyl tRNA synthetaseA
Protein translation takes place on ribosomal RNA and ribosomes. Amino acids are delivered to the ribosome by transfer RNAs. A tRNA must be “recharged” with a new amino acid after adding its amino acid to the increasing polypeptide chain. This is achieved without the aid of rRNA.
Knowledge flows from DNA to RNA to protein, according to the central biochemical model. Translation is the mechanism of creating protein from mRNA. The ribosome attaches to the mRNA and binds tRNA, which recognizes the codons on the mRNA and transports the necessary amino acid. The peptide bond between the new amino acid and the growing peptide chain is formed by the ribosome.
The process of translation, also known as protein synthesis, is essential for the survival of living organisms. Proteins are continually in use and will inevitably break down, so new ones must be available at all times. When protein synthesis slows or ceases, the organism perishes.
Transcription and translation overview
What molecule was thought to be the best choice for carrying genetic information until Hershey and Chase proved that DNA was the genetic molecule, and why? Proteins were thought to be the only molecule that could account for the broad spectrum of heritable traits found because of their diversity and specificity of action.
What prevents the two strands of DNA at the replication fork from coming back together to form a double helix once the DNA has been unwound by helicases? Single-strand binding proteins bind unwound DNA and prevent it from re-forming into a double helix.
Which of the following descriptions of DNA replication is the most accurate? Helicases divide the two strands of the double helix, and DNA polymerases use each of the initial strands as a template to create two new strands.
What part(s) of our conventional depiction of DNA polymerase molecules moving along a track like locomotives is incorrect? Instead of moving the proteins involved in replication, DNA is drawn through the complex. DNA polymerase functions as part of a larger protein complex, rather than as a single locomotive.
Introduction to chemical biology 128. lecture 09: rna part 2
Which of the following better explains the findings of Hershey and Chase’s experiment with 35S-labeled proteins or 32P-labeled DNA in bacterial viruses, which are consistent with protein being the molecule responsible for hereditary?
Which of the following enzymes, according to Beadle and Tatum’s “one gene–one enzyme” hypothesis, would prevent the transformation of genetic material from pathogenic bacteria to nonpathogenic bacteria?
Animal viruses enter host cells fully, while bacteriophages inject their genetic material into them. Why was it necessary to use a bacteriophage rather than an animal virus in the Hershey–Chase experiment?
A DNA series is shown below. Assume you’re looking at a portion of a DNA molecule that has split in preparation for replication, with just one DNA strand visible. Create a complementary DNA sequence (noting the 5′ and 3′ ends).
Figures 1 and 2 should be checked. Why was it critical for Meselson and Stahl to continue their experiment for at least two rounds of replication after isotopic labeling of the starting DNA with 15N, rather than stopping after one round?