The RNA World Hypothesis Quiz

RNA was created by the first living organisms

RNA served as a protective barrier for early cells

RNA chains were among the first self-replicating molecules that could evolve

RNA prevented harmful chemicals from entering early cells

G pairs with C, and A pairs with U through selective attraction

All bases pair with all other bases equally

Only A and U bases can form pairs

Bases pair randomly without any preference

None of the random chains had any useful function

Random chains could only replicate but not perform chemical reactions

All random chains were equally efficient at building nucleotides

Some random chains could build nucleotides, though not very efficiently at first

A ribozyme is a type of DNA that only stores genetic information

A ribozyme is a folded RNA chain that performs chemical reactions, with its specific function determined by its specific shape

A ribozyme is a nucleotide that cannot fold or change shape

A ribozyme is a protein that helps RNA replicate

Mutations prevent RNA from evolving

Mutations only make RNA weaker and less functional

Mutations and replication allow true evolution through natural selection to occur

Replication without mutations would be more beneficial for evolution

RNA and cells developed completely independently

Cells existed before RNA chains formed

Cells prevented RNA from replicating

Living cells can be thought of as survival machines or houses for RNA to live inside

Researchers cannot explain how backbone binding could function in nature without special enzymes or lab techniques

The video states that all problems with the hypothesis have been solved

Scientists don't know what RNA stands for

RNA cannot form base pairs in natural environments

PCR destroyed inefficient ribozymes

PCR allowed researchers to quickly replicate successful RNA chains with slight random mutations across multiple generations

PCR proved that evolution cannot happen in laboratories

PCR prevented mutations from occurring in RNA chains

It would not provide any advantage

It would have fewer competitors

It would have access to more free nucleotides than rival chains, allowing it to replicate more often

It would prevent other RNA chains from replicating

Self-folding requires more nucleotides than replication

Self-folding and replication are identical processes

Self-folding only happens in laboratories

Replication requires base pairing with free nucleotides and backbone bonding, while self-folding occurs when RNA base pairs with itself in the absence of free nucleotides