The atmosphere is quite dusty, giving the Martian sky a light brown or orange-red color when seen from the surface; data from the Mars Exploration Rovers indicate that suspended dust particles of roughly 1.5 micrometres diameter.
Glutamate is a powerful excitatory neurotransmitter that is released by nerve cells in the brain. It is responsible for sending signals between nerve cells, and under normal conditions it plays an important role in learning and memory.
GLUTAMATE AS NEUROTRANSMITTER. Glutamic acid (abbreviated as Glu or E) is one of the 20-22 proteinogenic amino acids, and its codons are GAA and GAG. It is a non-essential amino acid with a side chain carboxylic acid functional group. The carboxylate anions and salts of glutamic acid are known as glutamates.Glutamate is the most abundant excitatory neurotransmitter in the nervous system and it plays a key role in long-term potentiation. It is involved in most aspects of normal brain functions, including cognition, memory and learning.he glutamate released in the synaptic cleft binds to its receptor on the postsynaptic terminals, and it produces an excitatory postsynaptic potential (EPSP). The glutamate receptors can be divided into two groups according to the mechanism by which their activation gives rise to a postsynaptic current.