Why Are Viroids Resistant to Nucleases

question 73

Multiple Choice

Why are viroids resistant to nucleases?

• A) Having a circular RNA "genome," they are resistant to most exonucleases (that digest the free ends of RNA or DNA).
• B) Having a circular RNA "genome," with no protein shell, they are resistant to the protein-degrading activities of nucleases.
• C) Nucleases will only digest DNA, not RNA, so viroids are protected.
• D) Viroids have only been identified in plants. Plant nucleases cannot digest RNA.
• E) Viroids are composed of single stranded RNA; nucleases only act on double-stranded molecules.

Distinguish between material and immaterial breaches of contract and their eventual impact on the contractual relationship.

Learn the distinction between actual performance and substantial performance and their relevance in fulfilling contractual obligations.

Understand the conditions under which specific orders, like orders for specific performance, can be sought to enforce contract terms.

Acknowledge the effect of personal and unforeseeable circumstances (like illness or unforeseen incapacity) on the performance of contractual obligations.

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An economic philosophy of free-market capitalism that opposes government intervention.

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A severe worldwide economic downturn that took place during the 1930s.