If a chemical reaction catalyzed by an enzyme is being carried out and there is a sudden, drastic decrease in temperature, what is most likely to happen next? A. Enzyme activity will decrease, and the reaction will proceed very slowly, or possibly not at all.
B. Less heat will be lost to the environment, and the reaction will take place more efficiently.
C. The reaction will proceed more quickly since the activation energy is decreased.
D. The reaction rate will decrease and eventually return to normal as the enzyme adapts to the temperature change.

The empty trna moves off and picks up another matching amino acid from the cytoplasm in the cell. the anticodon of the trna, with its attached amino acid, pairs to the codon of the mrna, which is attached to a ribosome. this sequence is repeated until the ribosome reaches a stop codon on the mrna, which signals the end of protein synthesis. the ribosome forms a peptide bond between the amino acids, and an amino acid chain begins to form. when a second trna with its specific amino acid pairs to the next codon in sequence, the attached amino acid breaks from the first trna and is bonded to the amino acid of the second trna.