Match each soil horizon to the description of its formation horizon A

parent material barely affected by soil

formation process

horizon

undergoes the most change, barely

resembles parent material

accumulation of organic material

horizon B

decomposed organic material mixes with

highly weathered parent material

horizon

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.