Beginning from the bottom of the strand what would be the amino acid sequence? A. Leu-stop-Arg-Leu B. Glu-Thr-Ala-Asn C. Leu-stop D. Leu-Leu-Arg-Leu

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.

Mrna: gcuaauguc what amino acids does the mrna above code for? what type of amino acids or function are uag, uga, and uaa coding for? which codon (3 letters) signals translation to start and also codes for the amino acid methionine (met)?