Biology Forums - Study Force

Viroids characteristically are composed of
 
  A. ssRNA.
  B. dsRNA.
  C. ssDNA.
  D. dsDNA.

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Viroids cause disease in
 
  A. animals.
  B. plants.
  C. bacteria.
  D. fungus.

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Prions affect the
 
  A. respiratory system.
  B. gastrointestinal tract.
  C. nervous system.
  D. lymphatic system.

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Prions
 
  A. consist of a special nucleocapsid.
  B. are made of protein only.
  C. are made of RNA only.
  D. are made of dsRNA and protein.

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Plant viruses may be transmitted by
 
  A. worms.
  B. contaminated seeds.
  C. humans.
  D. insects.
  E. All of the choices are correct.

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