Which characteristic could apply to a noninfectious disease but not to an infectious disease? A. can be caused by protozoa
B. can be transmitted through contact with an infected person
C. can result from eating a diet high in saturated fats and cholesterol
D. can be spread through vectors

Which of the following represents a difference between viruses and viroids? a) viruses infect many types of cells, whereas viroids infect only prokaryotic cells.b) viruses have capsids composed of protein, whereas viroids have no capsids.c) viruses have genomes composed of rna, whereas viroids have genomes composed of dna.d) viruses cannot pass through plasmodesmata, whereas viroids can.