Multiple Choice
Choose all of the following properties that indicates RNA pre-dated both DNA and proteins.
5. DNA to RNA to Protein
RNA and the Origins of Life
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Ribozymes have catalytic functions because of why?
A
They bind to proteins, which allow them to exert their effect on other molecules
B
They are translated into proteins
C
They can fold into 3D conformations that act similarly to proteins
D
None of the above
Verified step by step guidance1
Understand the basic definition of ribozymes: Ribozymes are RNA molecules that have the ability to catalyze specific biochemical reactions, similar to protein enzymes.
Explore the structural properties of ribozymes: Ribozymes can fold into complex three-dimensional structures, which is crucial for their catalytic activity. This folding allows them to form active sites that can interact with substrates.
Compare ribozymes to protein enzymes: Like protein enzymes, ribozymes have specific active sites formed by their 3D conformations, enabling them to lower the activation energy of reactions and increase reaction rates.
Consider the role of RNA folding: The ability of RNA to fold into specific shapes is essential for ribozyme function. This folding is driven by interactions such as hydrogen bonding, base stacking, and metal ion coordination.
Conclude why ribozymes have catalytic functions: The key reason ribozymes can act as catalysts is their ability to fold into 3D conformations that mimic the active sites of protein enzymes, allowing them to perform similar catalytic roles.
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