Protein Synthesis
Type I proteins (plasma membrane) have a

cleavage N- terminal signal sequence and a hydrophobic stop transfer sequence
cleavaged N- terminal signal sequence that doubles as the membrane anchoring sequence
multiple signal sequence and a hydrophobic stop transfer sequence
multiple signal sequence that doubles as the membrane anchoring sequence

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Protein Synthesis
Translation in prokaryotes begins by the formation of a 30S initiation complex between the

30S ribosomal subunit and mRNA only
30S ribosomal subunit, mRNA and initiation factors
30S ribosomal subunit, tRNA and initiation factors
30S ribosomal subunit, mRNA, initiation factors and N-fMet tRNA

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Protein Synthesis
The direction of amino acid transfer to the growing polypeptide chain is

from the P site to the E site on the ribosome
from the P site to the A site on the ribosome
from the A (aminoacyl tRNA site) site to the P (peptidyl tRNA site) site on the ribosome
from the A site to the E (exit tRNA site) site on the ribosome

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