Which of the following describes plant virus

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26) Which of the following describes plant virus infections? A) They can be controlled by the use of antibiotics. B) They are spread throughout a plant by passing through the plasmodesmata. C) They have little effect on plant growth. D) They are seldom spread by insects. E) They can never be inherited from a parent. Answer: B Topic: Concept 19.3 Skill: Knowledge/Comprehension 27) Which of the following represents a difference between viruses and viroids? 28) The difference between vertical and horizontal transmission of plant viruses is that
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9 Topic: Concept 19.3 Skill: Knowledge/Comprehension 29) What are prions? 30) Which of the following is the best predictor of how much damage a virus causes? A) ability of the infected cell to undergo normal cell division B) ability of the infected cell to carry on translation C) whether the infected cell produces viral protein D) whether the viral mRNA can be transcribed E) how much toxin the virus produces Answer: A Topic: Concept 19.3 Skill: Knowledge/Comprehension
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