Beta ( ) sheets are a type of secondary structure in proteins. a segment of a single chain in an antiparallel sheet has a length of 94.5 å . how many residues are in this segment?

a = executive branch; b = judicial branch

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.

gag reflex, poor dentition, gum retraction

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