MDCAT Biology MCQ #133

Plant diseases like potato spindle tuber are caused by viroids. What is the chemical composition of these infectious agents?

MDCAT Biology MCQ #133

  1. Question 1

    Q1. Plant diseases like potato spindle tuber are caused by viroids. What is the chemical composition of these infectious agents?

    • A) Double-stranded DNA
    • B) Single-stranded DNA
    • C) Single-stranded RNA
    • D) Complex proteins

    Answer: Single-stranded RNA

    Explanation: Viroids consist of circular single-stranded RNA; prions are the agents that consist of proteins only.