<span>without myelination, information about limb movement moves slowly to the CNS and motor commands move slowly back to the muscles. by the time the motor command has reached the muscle, it may no longer be appropriate. as the neurons become myelinated, the speed of action potential increases which is why we observe improved balance, coordination, and movement.</span>
Answer:
their shape, which relates to the lock-and-key model
Explanation:
Enzymes are biological catalysts that are proteinous in nature. Their proteinous nature implies that they are made of amino acids, which forms a three-dimensional shape that accounts for their functionality and specificity. This means that enzymes are substrate-specific because of their 3D shape.
The three-dimensional shape of an enzyme determines the kind of substrate it will bind to. Enzymes, generally, catalyze reactions by binding to a substrate at their active site. This binding follows a lock and key pattern or model. In a nutshell, the primary source of specificity of enzymes is attributed to their SHAPE, which relates to the lock-and-key model.
