Ribosomes provide the scaffolding on which trnas interact with mrna during translation of an mrna sequence to a chain of amino acids. a ribosome has three binding sites, each of which has a distinct function in the trna-mrna interactions. drag the appropriate trnas to the binding sites on the ribosome to show the configuration immediately before a new peptide bond forms. note that one of the binding sites should be left empty.

Two tRNA should be placed on the ribosome P and A binding sites. The tRNA who has an attached codon corresponding to the mRNA codon above P site should be dragged on P site, and the tRNA who has an attached codon corresponding to the mRNA codon above A site should be dragged on A binding site. E binding site on the ribosome should be left empty.

Explanation:

The large ribosome unit in translation has 3 binding sites:

1. E binding site (Exit site) which is empty after an amino acid bond is formed (Because after it is formed, a previous tRNA had to leave this Exit site)

2. P binding site (Polypeptide site) which is the place in which the aminoacid bond is formed.

3. A binding site (Aminoacid site) in which new amino acids are welcome according to the mRNA lead, to build another peptide bond.

All tRNA passes through all these sites but immediately a new peptide bond forms we have the P and A sites occupied. Then they will shift to the left and one of the tRNA will leave after being in E site, and the other will remain on the P site, waiting for another peptide bond to be formed.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: