What happens next after the ribosome reaches the start codon? A. tRNA molecules attach to codons.
B. Peptide bonds between amino acids are broken.
C. The ribosome detaches from the amino acids.
D. The ribosome finds the stop codon.

Explanation:

After ribosome scans down the mRNA and reaches the start codon, the first transfer RNA (tRNA) will arrive.

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the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.