The Surfaces of the Two Ribosomal Subunits That Face One

question 54

Multiple Choice

The surfaces of the two ribosomal subunits that face one another contain the binding sites for the mRNA and incoming tRNAs and are thus key for the function of the ribosomes. The fact that these surfaces consist largely of RNA supports what proposal?

• A)primordial ribosomes were composed solely of proteins
• B)primordial ribosomes were composed exclusively of RNA
• C)primordial ribosomes were composed exclusively of DNA
• D)prokaryotes gave rise to eukaryotes
• E)endosymbiosis gave rise to eukaryotes

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Definitions:

Moral Behaviors

Actions that are in alignment with societal norms and values regarding what is right and wrong.

Global Empathy

The ability and willingness to understand and share the feelings of people from diverse backgrounds and cultures on a global scale.

Accidentally

Occurring by chance, without intention or plan.

Moral Notion

A concept related to the principles or rules of right conduct or the distinction between right and wrong.