Question

which statement describes the first step of protein synthesis? (1 point)
dna unwinds between the base pairs.
a ribosome attaches to the mrna.
amino acids are linked together with peptide bonds.
trna attaches amino acids to the mrna strand.

Explanation:

Protein synthesis has two main steps: transcription and translation. Transcription is the first step. In transcription, DNA unwinds between base pairs. RNA polymerase then uses one strand of DNA as a template to synthesize mRNA. The other options (a ribosome attaching to mRNA, amino acids linking with peptide bonds, tRNA attaching amino acids to mRNA strand) are steps in translation (the second step of protein synthesis). So the first step described among the options is DNA unwinding between base pairs.

Answer:

DNA unwinds between the base pairs.