Examlex
The alkene CH3CH=CHCH2CH3 cannot exist as cis and trans isomers.
Instinct
A fixed behavioral response in animals that is instinctual and occurs upon encountering certain stimuli.
Cerebral Cortex
The cerebral cortex is the outer layer of the cerebrum in the brain, playing a key role in memory, attention, perception, cognition, awareness, thought, language, and consciousness.
Amygdala
A section of the brain's limbic system involved in emotion, behavior, and motivation, particularly known for its role in processing fear.
Optic Nerve
The nerve that transmits visual information from the retina to the brain.
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