**Core Concept**
Aspartate and glutamate are both excitatory neurotransmitters in the central nervous system, playing crucial roles in synaptic transmission and neuronal excitability. They are also amino acids that can be synthesized via different metabolic pathways.

**Why the Correct Answer is Right**
Aspartate is similar to glutamate in that both are excitatory neurotransmitters that act on N-methyl-D-aspartate (NMDA) receptors, a subtype of glutamate receptors. This allows them to mediate similar physiological effects, such as neuronal excitation and synaptic plasticity. Additionally, both aspartate and glutamate can be synthesized from glutamine via the enzyme glutaminase, highlighting their metabolic relationship.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because aspartate and glutamate have distinct metabolic pathways, with aspartate being synthesized from oxaloacetate via the enzyme aspartate transaminase.
**Option B:** This option is incorrect because aspartate and glutamate have different receptor profiles, with aspartate primarily acting on NMDA receptors and glutamate acting on multiple receptor subtypes, including AMPA and kainate receptors.
**Option C:** This option is incorrect because aspartate and glutamate have different roles in the urea cycle, with aspartate serving as a precursor to arginine and glutamate serving as a precursor to alpha-ketoglutarate.

**Clinical Pearl / High-Yield Fact**
Aspartate and glutamate are both excitatory neurotransmitters that can contribute to excitotoxicity in conditions such as stroke and neurodegenerative diseases.

**Correct Answer:**