Which flow chart correctly describes steps that lead to the synthesis of proteins?
a
mRNA → tRNA → DNA
b
tRNA → mRNA → DNA
c
DNA → mRNA → tRNA
d
mRNA → tRNA → DNA
None of the options provided accurately describe the steps leading to the synthesis of proteins. The correct sequence should be:
DNA → mRNA → Protein
Here's a breakdown of the process:
1. Transcription: The first step involves transcribing DNA to mRNA. In this process, a gene on the DNA is read by the enzyme RNA polymerase, and a complementary mRNA strand is synthesized.
2. Translation: The mRNA then travels out of the nucleus (in eukaryotes) to the ribosomes where it is translated. Transfer RNA (tRNA) molecules bring the appropriate amino acids to the ribosome based on the codon sequences on the mRNA.
3. Polypeptide Chain Formation: The amino acids are linked together by peptide bonds to form a polypeptide chain, which will fold into a functional protein.
If there was an option like DNA → mRNA → Protein, that would be the correct choice.