Question

the graph below shows the rate of biochemical reaction for a biochemical reaction. what is the best explanation of the relationship between rate of reaction and enzyme concentration? at low enzyme concentrations, there is less competition for the enzyme active site, and the reaction rate is high. as enzyme concentration decreases, the substrates will fill all available enzyme active sites, thus halting the reaction rate. as enzyme concentration increases, there are more enzyme active sites available, and the reaction can proceed at a faster rate. at high enzyme concentrations, there are many enzyme active sites that are not occupied by a substrate, so the reaction rate is slow.

Explanation:

Enzymes catalyze biochemical reactions. At low enzyme concentrations, fewer active - sites are available, limiting reaction rate. As enzyme concentration increases, more active - sites are present, allowing more substrates to bind and increasing the reaction rate until saturation is reached.

Answer:

At low enzyme concentrations, there is less competition for the enzyme active site, and the reaction rate is high. As enzyme concentration increases, there are more enzyme active sites available, and the reaction can proceed at a faster rate. At high enzyme concentrations, there are many enzyme active sites that are not occupied by a substrate, so the reaction rate is slow. This statement is incorrect. The correct relationship is that the rate of reaction generally increases with increasing enzyme concentration until all substrates are saturated with enzymes.