Proteins are made up of amino acids not ribosomes.
Answer: believe the answer is C.
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Primary consumers obtain nitrogen directly from eating plants.
The correct substitutes would be " A. Ellos lo compraron
In English, Ellos compraron El Reloj Pulsera means : They (masculine) bought the watch
Reloj : Masculine singular Pronoun, which means that the objective pronoun should be : LO
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Enzyme inhibitors fit into the active site of the enzyme blocking catalytic activity of the enzyme.