Which of the following statements about plant viruses is false?
A) Once in a plant, a virus can spread from cell to cell through plasmodesmata.
B) The genetic material in most plant viruses is RNA.
C) Preventing infections and breeding resistant plants can control viral infection in plants.
D) There are many successful ways to rid infected plants of a virus.
Answer: D
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The term complex as used in the Mycobacterium tuberculosis complex:
a. means that the identification of the organ-ism is complex and is only performed in large reference laboratories. b. is used to describe two or more species whose distinction is complicated and of little or no medical importance. c. refers to a set of organisms that are genet-ically indistinguishable but are phenotyp-ically different. d. refers to different subtypes of the bacteria M. tuberculosis.
Which plants are characterized by a conducting system, the possession of cuticles, specialized stems, and roots, stomata, and, in many species, seeds?
A. liverworts B. mosses C. tracheophyte D. horsetails E. club mosses
In the CRISPR/Cas system ________.
A. methylated DNA sequences are hydrolyzed, effectively destroying the viral DNA B. bacteria integrate portions of the viral genome into their own so they have a molecular snapshot of their attacker to prevent future encounters C. methylase enzymes add methyl groups to the viral nucleic acids, preventing transcription D. restriction endonucleases digest viral genomes once they enter the cell if the viral DNA is not methylated
________ is the process by which large molecules and cell products leave the cell through the phospholipid membrane
Fill in the blank(s) with correct word