Question

10 multiple choice 1 point which of the statements is a correct description of the role of enzymes in catalyzing biochemical reactions? enzymes provide the necessary activation energy to reach the transition state enzymes increase the overall δg of reactions, making them proceed rapidly enzymes decrease the overall δg of reactions, making them proceed rapidly enzymes stabilize the transition state and decrease free energy required to reach transition state none of the statements are correct 11 multiple choice 1 point which step occurs in the p - site of the ribosome during translation? all answers are correct the trna carrying the growing polypeptide moves to this site as the ribosome slides to the next codon none of the other answer options is correct an uncharged trna is ejected from this site as the ribosome slides to the next codon an incoming charged trna binds to this site 12 multiple choice 1 point

Explanation:

1. For question 10: Enzymes lower the activation - energy of a reaction by stabilizing the transition state, not providing activation energy or changing the overall $\Delta G$ of the reaction.
2. For question 11: In the P - site of the ribosome during translation, the tRNA carrying the growing polypeptide moves to this site as the ribosome slides to the next codon, and an uncharged tRNA is ejected from this site as the ribosome moves.

Answer:

1. Enzymes stabilize the transition state and decrease free energy required to reach transition state
2. The tRNA carrying the growing polypeptide moves to this site as the ribosome slides to the next codon; An uncharged tRNA is ejected from this site as the ribosome slides to the next codon