Suppose the atoms in a two-dimensional crystal have the following arrangement: 
How many atoms are in one unit cell?
Definitions:
RNA Polymerases
Enzymes responsible for catalyzing the synthesis of RNA from DNA templates, playing a crucial role in gene expression.
Transcription
The process in which the DNA sequence of a gene is copied into RNA, leading to protein synthesis in living organisms.
tRNA Triplet
A sequence of three nucleotides in transfer RNA that is complementary to the codon in messenger RNA and specifies an amino acid.
mRNA
Messenger RNA, a type of RNA that carries genetic information from DNA to the ribosome, where it specifies the amino acid sequence of the protein products.
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