Question

Assembling the individual enzymes required for a multistep process into a complex of proteins increase the efficiency of the entire process in all of the following ways EXCEPT by?

1) coordinating the movement of the enzymes
2) ordering the reactions sequentially.
3) increasing the Vmax of the individual enzymes.
4) increasing the rate at which the individual enzymes encounter their substrates.
5) coordinating the regulation of the individual enzymes.

Answer 1

Assembling enzymes into complexes helps coordinate enzyme movement, order reactions, enhance rates of substrate encounter, and regulate activities, but does not increase the maximum rate (Vmax) of individual enzymes.

Step-by-step explanation:

Enzymes are catalysts that increase the rate of chemical reactions without being consumed in the process. They function by binding to substrates, forming an enzyme-substrate complex, which lowers the activation energy required for the reaction to proceed. Assembling enzymes into complexes can increase the efficiency of a multistep process in various ways, except for increasing the Vmax of individual enzymes, which is the maximum rate at which the enzyme can process substrate.

When enzymes are assembled into a protein complex, the proximity of the enzymes to each other can lead to coordinated movement, sequential ordering of reactions, and increased encounter rates between enzymes and substrates, as well as coordinated regulation. However, the assembly into a complex does not intrinsically alter the Vmax of the individual enzymes; this value is dependent on the enzyme's properties and cannot be increased by simply forming a complex.