Answer:
The best answer to the question: When the ribosome reaches a stop codon on the mRNA, no corresponding tRNA enters the A site. If the translaton reaction were to be experimentally stopped at this point, which of the following would you be able to isolate, would be, A: An assembled ribosome with a polypeptide attached to the tRNA in the P site.
Explanation:
When mRNA is ready to be translated, ribosomal units assemble around the chain to begin the translation. In order for this translation to be correct, and follow a specific, and desired, pattern, the ribosome counts with a series of sites that, when they meet the appropriate signals in the mRNA sequences, it will know when to stop assembling tRNA and with it polypeptides. As such, once a ribosome meets what is known as a stop codon, tRNA and its consequently binding parts of a protein will also stop.
The P site is the second binding site for tRNA in a ribosome. During translation the P site is the one responsible for holding together tRNA and its attaching and growing polypeptide chain. When the process is ended by reaching a stop codon, the bond between the peptydil at the P site and tRNA is broken and the new protein is thus released. Therefore, if in a hypothetical situation, you were to stop the translation process precisely at the point where tRNA has entered the A site, which is the beginning of the translation sequence, you would be able to find the assembled ribosome, and the growing polypeptide chain attached to the already started tRNA on the P site.
Paramecia<span> reproduce asexually, by binary fission. During reproduction, the macronucleus splits by a type of amitosis, and the micronuclei undergo mitosis. The </span>cell<span> then divides transversally, and each new </span>cell<span> obtains a copy of the micronucleus and the macronucleus.</span>
Firstly, we need to know what a healthy ecosystem is. When an ecosystem is healthy, this would mean that it could supply all the resources that all organisms present in it and with all the resources, there is diversity. Old growth forests are considered healthy because of this reason. These forests remain untouched and had remained in providing the resources needed for the organisms present in it.
Answer:Several times a year, My NASA Data (MND) selects phenomena in each sphere to showcase NASA-related resources. MND is continuously updating new resources as we are improving our collections. Check back for new Earth System phenomena, related lesson plans, maps & data, and GLOBE resources.
Explanation: