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
This importance of protein to our very structure is only one function played by proteins, however. Proteins are equally important to our metabolism because all enzymes in our body that help trigger chemical reactions are proteins. Many of our most important regulatory hormones, like insulin, are also proteins.