Examlex
The radius of the moon's orbit is about ____ times larger than the radius of Earth.
DNA Molecule
The fundamental and distinctive structure of biological organisms, consisting of two long chains of nucleotides twisted into a double helix and responsible for genetic traits.
Epigenetic Mark
Chemical modifications to the DNA or surrounding proteins that affect gene expression without changing the DNA sequence and can be influenced by environmental factors.
Synapse
The junction between two neurons, facilitating the transmission of electrical or chemical signals from one neuron to the other.
Neurotransmitter
A chemical substance that transmits signals across a synapse between neurons in the nervous system.
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