Determine a point mutation that would change the amino acid sequence of the protein. List the new MRNA codon and amino acid resulting from the point mutation here:

carbon

explanation:

the answer to your question is tooth decay.

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.