A. R groups interact to form disulfide bonds or ionic bonds. - <span>tertiary and quaternary
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B. Several polypeptide chains in a \beta-pleated sheet are held together by hydrogen bonds between adjacent chains. s</span><span>econdary, tertiary, or quaternary
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C. Hydrogen bonding between amino acids in the same polypeptide gives a coiled shape to the protein. </span><span>primary</span>
Once you add detergent (base) to water (H2O), you are breaking the surface tension.
Gibbous refers to the moon when it is more than half full but not completely full. This results in half a circle with a smaller arc on the opposite side. This makes a weird shaped “hump” on that side which is what the humpback means.