Refer to the Reaction Coordinate Diagram Below

question 18

Multiple Choice

Refer to the reaction coordinate diagram below.The change in the activation energy of the reaction because of the presence of an enzyme is illustrated by the energy of __________ minus the energy of __________.

• A) B; A
• B) B; C
• C) B; D
• D) C; D

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Definitions:

Synaptic Reuptake

The presynaptic neuron’s process of reabsorbing its own neurotransmitters after signaling so that they can be released again the next time the neuron fires.

Neurotransmitters

Chemical substances that transmit signals across a synapse from one neuron to another in the brain, influencing various bodily functions and behaviors.

Synaptic Vesicles

Small sacs in a synapse that release neurotransmitters into the synaptic cleft to transmit neural signals between neurons.

Blood-Brain Barrier

A semipermeable barrier of endothelial cells that prevents most substances in the blood from entering the brain, thereby protecting it from toxins while allowing essential nutrients to pass through.