Lab coats may or may not be considered PPE, depending on whether the fabric they are made out of is fluid resistant. If lab coats are fluid resistant and provide coverage in the form of high necks, etc., they can be considered PPE. The lab coats would have to be worn during procedures in which a splash/spray exposure could be expected.
-forms an important part of both subunits of the ribosome What is the role of tRNA? -carries amino acids to the ribosome and matches them to the coded mRNA message
tRNA interprets the nucleotide sequence of mRNA to build the corressponding amino acid sequence. tRNA reads codons of mRNA to build proteins. tRNA does its job after the mRNA is made ready for translation. mRNA is made of strings of codons, which are sets of three nucleotides that code for a single type of amino acid. The purpose of tRNA is to read these sets of three and translate that information to produce the correct amino acid. tRNA is linked up with the codons by ribosomes since each amino acid codon has a specific trio of nucleotides. The ribosome finds the starting codon, AUG, and then the correct tRNA is produced. The tRNA produces the amino acid and is then discarded, but the amino acid stays behind. The amino acid bonds with the next one in the chain, which then bonds with the next and so on. This string of amino acids builds a protein.