Examlex
Match EKG feature with correct characteristic.
-Time during which ventricles are filling.
3' Trailing Sequences
Sequences at the 3' end of a nucleic acid molecule that do not code for protein but can have roles in regulating gene expression and stability of the molecule.
Stop Codon
Any of the three codons in mRNA that do not code for an amino acid (UAA, UAG, or UGA) but signal the termination of translation. Compare with start codon.
Pre-rRNA Molecules
Precursor molecules to ribosomal RNA that undergo processing to become mature rRNA, a key component of ribosomes.
Nucleolus
A dense, spherical structure within the nucleus of a cell, involved in ribosomal RNA synthesis and ribosome biogenesis.
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