<span>Ribosomal RNA (rRNA) associates with a set of proteins to form ribosomes. These complex structures, which physically move along an mRNA molecule, catalyze the assembly of amino acids into protein chains. They also bind tRNAs and various accessory molecules necessary for protein synthesis.</span>
Because warm air rises up so it's warmer on the top floor.
Answer:
True
Explanation:
Osmosis refers to the diffusion of water molecules ONLY.
