Examlex
In an atom, the first (innermost) shell contains a maximum of __________ electrons.
RNA Enzyme
Also known as a ribozyme, a type of RNA molecule that can catalyze specific biochemical reactions, similar to the action of protein enzymes.
Substrate
The surface or material on or from which an organism lives, grows, or obtains its nourishment, or the reactant upon which an enzyme acts.
RNA Hypothesis
A scientific theory suggesting that RNA, rather than DNA, was the first genetic material to evolve in early life forms.
Polypeptides
Chains of amino acids linked by peptide bonds, which can function independently or as part of a protein.
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