system
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human
How is the right amino acid brought to ribosomes?

So what I know is that the mRNA is brought to the ribosome with a code for an amino acid. I also know that the tRNA with a matching codon and correct amino acid are brought to the ribosome for assembly. But how is the right amino known? Does the ribosome read the mRNA and call for a tRNA or do the tRNA keep trying to fit the codon in the ribosome till it fits then goes and brings the amino acid. Thanks i have a test on this is a couple of hours.
gpt
> But how is the right amino known?

Put simply, it doesn't 'know'. All the amino acids are attached to tRNAs and they all diffuse around until they meet a ribosome that requires that particular one, as determined by the codon of the mRNA. It can't "call for it" it just waits for it.