Question

question 15 (1 point)
competitive inhibitors
act like the active site and take substrates away from the enzyme.
change the shape of the enxyme by binding at the allosteric site.
combine with substrate molecules.
combines with the active site of the enzyme.
none of the above.
question 16 (1 point)
how does an enzyme speed up a chemical reaction?
by providing additional heat energy
by reducing the potential energy of reactant molecules
by changing the position of equilibrium
by becoming consumed in the reaction
by lowering the activation energy of the reaction

Explanation:

For Question 15, competitive inhibitors have a similar structure to the substrate and bind to the active - site of the enzyme, preventing the substrate from binding. For Question 16, enzymes speed up chemical reactions by lowering the activation energy required for the reaction to occur.

Answer:

Question 15: combines with the active site of the enzyme.
Question 16: by lowering the activation energy of the reaction